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New build of Serpent/UXP for XP! Test binary: Win32 https://o.rthost.win/basilisk/basilisk52-g4.8.win32-git-20260117-3219d2d-uxp-aace8fa8c0-xpmod.7z Win64 https://o.rthost.win/basilisk/basilisk52-g4.8.win64-git-20260117-3219d2d-uxp-aace8fa8c0-xpmod.7z source code that is comparable to my current working tree is available here: https://github.com/roytam1/UXP/commits/custom IA32 Win32 https://o.rthost.win/basilisk/basilisk52-g4.8.win32-git-20260117-3219d2d-uxp-aace8fa8c0-xpmod-ia32.7z source code that is comparable to my current working tree is available here: https://github.com/roytam1/UXP/commits/ia32 NM28XP build: Win32 https://o.rthost.win/palemoon/palemoon-28.10.7a1.win32-git-20260117-d849524bd-uxp-aace8fa8c0-xpmod.7z Win32 IA32 https://o.rthost.win/palemoon/palemoon-28.10.7a1.win32-git-20260117-d849524bd-uxp-aace8fa8c0-xpmod-ia32.7z Win32 SSE https://o.rthost.win/palemoon/palemoon-28.10.7a1.win32-git-20260117-d849524bd-uxp-aace8fa8c0-xpmod-sse.7z Win64 https://o.rthost.win/palemoon/palemoon-28.10.7a1.win64-git-20260117-d849524bd-uxp-aace8fa8c0-xpmod.7z Win7+ x64 AVX2 https://o.rthost.win/palemoon/palemoon-28.10.7a1.win64-git-20260117-d849524bd-uxp-aace8fa8c0-w7plus-avx2.7z Official UXP changes picked since my last build: - Issue #1636 - Part 1 - Decouple Gio from GConf and always build it with GTK (fc78eec911) - Issue #1636 - Part 2 - Disable Gconf by default (990f256885) - Issue #1636 - Part 3 - Remove Gconf (b04e3d93c9) - Issue #2895 - Part 1: Replace XorShift128+ with Xoroshiro128++ (d4341ea07a) - Issue #2895 - Part 1b: Update license block. (d23afa84e5) - Issue #2895 - Part 2: Remove incorrect debug asserts. (5a0f190104) - Issue #2895 - Part 3: Add manual test. (75ec48bc41) - Issue #2889 - Part 0: Relocate Mozilla-specific files from Expat source. (b81b97ee47) - Issue #2889 - Part 1: Prepare Mozilla's changes and extensions for Expat 2.6.4. (9567601675) - Issue #2889 - Part 2: Import Expat 2.6.4 source. (9ade98b4fc) - Issue #2889 - Part 3: Apply Mozilla's patches to Expat 2.6.4. (0b9e221b14) - Issue #2889 - Part 4: Fix build and runtime issues. (a2f8e66162) - Issue #2889 - Follow-up: Avoid conflicts with system version of libexpat (e0f8acddc7) - Issue #2889 - Follow-up: void methods shouldn't return a value. (8956c61187) - Issue #2889 - Part 5: Rewrite patches for Expat 2.7.3. (a730f838c8) - Issue #2889 - Part 6: Import Expat 2.7.3 source. (d2acec73f7) - Issue #2889 - Part 7: Apply patches to Expat 2.7.3. (ca2ef5184a) - Issue #2889 - Follow-up: Allow generate_hash_secret_salt to be used. (acefed74fe) - Issue #2889 - Follow-up: Adjust Expat 2.7.3 local patches for removal of 3rd patch. (034eeaff97) - Issue #2889 - Follow-up: Remove fix for BZ 569229. (493169e227) - Issue #2895 - Follow-up: Fix JIT code generator for 32-bit targets. (d6e9c4d85b) - [gfx] Be more explicit when converting to cairo formats. (f6d18c7d78) - [gfx] Use better types for cairo image surface manipulations. (6ca8cf782b) - [DOM] Check worker script size (d8f7202951) - [Auth] Only set GSS_C_DELEG_FLAG flag when we confirm server supports delegation. (5321363a1b) - [NSS] Update NSS (464b24c608) - [XPCOM] Add hashkey helper classes for future use. (7b9eda3f69) - [gfx] Add some additional sanity checks to cairo surface creation. (3aff60e443) No official Pale-Moon changes picked since my last build. No official Basilisk changes picked since my last build. My changes picked since my last build: - application: remove gio from MOZ_EXTENSIONS_DEFAULT (69c17afbe0) - htmlparser: break when infinite loop happens (8201dadf41) Update Notice: - You may delete file named icudt*.dat and icu63.dll inside program folder when updating from old releases. * Notice: From now on, UXP rev will point to `custom` branch of my UXP repo instead of MCP UXP repo, while "official UXP changes" shows only `tracking` branch changes.

I use Panda 22.03.01 and on a dual or quad core systems PSANHost upon boot up doesn't really waste any cycles, only swells to ~100MB and then goes down to ~15MB from what I observed in TaskManager. It's been a wonderful replacement for Avast and/or AVG and their treachery of the XP systems after all this data we've shared with them throughout the years.

that had to be said. And yes, you were absolutely right. At least, Adlice's support has replied quite quickly. In contrast to that I haven't heard from Panda's support for weeks. Seems to be non-existent.

First of all, thanks for uploading the files! I was surprised to learn that there is supposed to be a .NET Framework version 4.0.30320 for Windows XP. I couldn't find anything about it in any official source. In any case, your installer "Microsoft .NET 4.0.30320 Full" is the same one I have, and it has the number 4.0.30319.1. Presumably, at least for Windows XP, there is no version 4.0.30320. You can find out your current version installed with the following command: reg query "HKLM\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full" /v Version The MS Visual C++ 2010 SP1 (10.0.40219.473) installer is indeed the last one you can still get from Microsoft or from abbodi1406. I will try later. In any case, thanks again!

Here you go, enjoy! Installers.zip

New build of Serpent/UXP for XP! Test binary: Win32 https://o.rthost.win/basilisk/basilisk52-g4.8.win32-git-20260110-3219d2d-uxp-3e9ca11775-xpmod.7z Win64 https://o.rthost.win/basilisk/basilisk52-g4.8.win64-git-20260110-3219d2d-uxp-3e9ca11775-xpmod.7z source code that is comparable to my current working tree is available here: https://github.com/roytam1/UXP/commits/custom IA32 Win32 https://o.rthost.win/basilisk/basilisk52-g4.8.win32-git-20260110-3219d2d-uxp-3e9ca11775-xpmod-ia32.7z source code that is comparable to my current working tree is available here: https://github.com/roytam1/UXP/commits/ia32 NM28XP build: Win32 https://o.rthost.win/palemoon/palemoon-28.10.7a1.win32-git-20260110-d849524bd-uxp-3e9ca11775-xpmod.7z Win32 IA32 https://o.rthost.win/palemoon/palemoon-28.10.7a1.win32-git-20260110-d849524bd-uxp-3e9ca11775-xpmod-ia32.7z Win32 SSE https://o.rthost.win/palemoon/palemoon-28.10.7a1.win32-git-20260110-d849524bd-uxp-3e9ca11775-xpmod-sse.7z Win64 https://o.rthost.win/palemoon/palemoon-28.10.7a1.win64-git-20260110-d849524bd-uxp-3e9ca11775-xpmod.7z Win7+ x64 AVX2 https://o.rthost.win/palemoon/palemoon-28.10.7a1.win64-git-20260110-d849524bd-uxp-3e9ca11775-w7plus-avx2.7z Official UXP changes picked since my last build: - Issue #1791 - Part 1: Un-prefix `-moz-appearance` (a266b9852c) - Issue #1791 - Part 2: Stop force-styling checkboxes/radio buttons. (f303711c59) - Issue #1791 - Part 3: Add manual test for unprefixed `appearance`. (d40256d03f) - Automatically determine current CLDR version when updating langtags. (0471f3bb8c) - Sort replacements per language and per script to ensure the generated file has stable contents. (13b8ede31d) - Issue #2853 - Leverage viewport-only logic to ensure overflow propagation. (0357516199) - Issue #2856 - Make clearing of passwords prefable, and disable by default. (ea25057ec8) - Issue #2887 - Convert use of -moz-appearance to appearance (1782eeb3bd) - Issue #2871 - Restructure `GetEmojiPresentation()` for `Extended_Pictographic` clusters (f13f1bd96e) - Issue #2871 - Addendum - Code Comments (ae2f12c3bc) - Issue #2858 - Hack around the circular calls to `nsPrincipal::Write()` (99c3171426) - Issue #2858 - keep type in line with definition. (ffd00e4056) - Issue #2898 - Don't unroll to large stack probe loops. (628f7cd764) No official Pale-Moon changes picked since my last build. No official Basilisk changes picked since my last build. Update Notice: - You may delete file named icudt*.dat and icu63.dll inside program folder when updating from old releases. * Notice: From now on, UXP rev will point to `custom` branch of my UXP repo instead of MCP UXP repo, while "official UXP changes" shows only `tracking` branch changes.

I believe in those numbers, as I already stated, I don't trust someone will perform the fake scheme you just described. People have things in life, apart from the forum, you know! Besides, it's easy to check, as I already stated, too! So what? It's my business in what to believe. But at this point, it's too obvious you're very annoyed with someone else's fame. I also think there was a hidden reason to disable topic views. As already stated by @Monroe. Otherwise they would've gotten them back by this time already.

It's my own personal opinion that it was done intentionally so D.Draker's name and maybe a few others, would drop off the 'Popular Contributors' list in time ... which finally happened in the last three weeks, or so. I actually miss his name no longer on the list ... it was interesting watching his 'contributor count' go up and down. I hope I am wrong about the 'topic views' ... but since October nothing, lots of '0s' starting to show up. ...

KB936235 : info file newversion KB955988 Replace the Cimwin32.dll file. KB2676562 Leak Update Version for SP2 Replace all nt kernel & system files KB944340 : info file newversion KB2676562 Leak Update Version for SP2 Replace the kernel32.dll file. You can get all my Source Files Update Packs SP2 here. I would like everyone to archive them. Because they hotfix share is gone forever. https://drive.google.com/file/d/15B55MqPXmJlbSx3Uc4qNmXpsaUH63oBt/view?usp=sharing my link backup in archive.org https://archive.org/details/windows-2000-post-sp4-update-pack https://archive.org/details/windows-xp-post-sp1-update-pack https://archive.org/details/windows-xp-post-sp2-update-pack https://archive.org/details/windows-xp-post-sp3-update-pack https://archive.org/details/windows-xp-and-server-2003-x64-update-pack https://archive.org/details/windows-server-2003-x86-update-pack_202506

And if anyone thinks that there is hardly anything worse to report about SUPERAntiSpyware, I have to disappoint them. We now come to the "official support" for SUPERAntiSpyware, which has since been taken over by the American company USTechSupport. If you want to fill out the online form on the SUPERAntiSpyware homepage, you are required to provide a telephone number. Rejected! An email to support is answered immediately, but of course by a bot. You can write whatever you want, but you won't get any help. Just a recommendation that it's best to use the telephone support. And for this information, the support ticket is then marked as resolved. I've never seen such rubbish. The hotline is probably chargeable. It all smells like a rip-off. That wasn't the case when I contacted SUPERAntiSpyware support the last time years ago before it was acquired by RealDefense LLC in 2023 which is also an American company. But when it comes to America, nothing surprises me anymore.

SUPERAntiSpyware stopped Windows XP support with the version 10.0.0.1254 which was the last working installer version. Until the end of last year, it was still possible to update to version 10.0.0.1266 via automatic updates. Since the beginning of the year, this is no longer possible. Users are constantly being nagged to perform a programme update under Windows XP SP3 32-bit that renders the entire installation unusable after application. This is because it updates to the 64-bit version 10.0.0.1282. The old files are of course overwritten, and anyone who has not created a backup beforehand is lost. Luckily, after hours of searching, I found a Norton Ghost image of my other XP partition with the last changed files when SUPERAntiSpyware was updated to the version 10.0.0.1266. That's why I was able to manually restore the destroyed installaton. Furthermore, the size of the virus definition file that is downloaded has increased significantly. As before, it takes forever to load. The only good thing is that the definitions are still being updated at all. So, nothing is fine. You don't need one. I've had a lifetime licence for the Professional version since 2013. It used to be worth something when Windows XP was still supported. Those days are finally over.

Today, I have uninstalled Panda Free Antivirus 21.01.00 and installed Panda once again but via their online installer. The version installed by their online installer is 22.03.05. The online installer downloads the legacy installer FREEAV_LGC.exe (117MB) and not the common FREEAV.exe (161MB) under Windows XP. Unfortunately, the version 22.03.05 needs much longer for starting when booting Windows XP. It is round about 5 to 6 minutes on my old machine. The culprit is the process PSANHost.exe which places very high demands on the CPU, up to 99%. The previously installed version 21.01.00 only needed 2 minutes. I'll keep the currently installed version a while just for testing purpose but I think I'll go then back to version 21.01.00. The next days, I'll use to see how this version behaves in my system doing all the things I usually do.

reverting changes in #2895 seems help. now 32bit builds are being compiled and same filename archives will be replaced later. EDIT: all today's 32bit build archives are updated.

The background images are all JPG files and already locally stored while installation.

At the beginning of my Odyssey, I investigated all folders and registry keys belonging to Panda Dome. Therefore, I also found the location of these background images. Additionally, I analyzed the registry accesses of Panda Dome, in particular with regard to the background images. But I have not yet identified the core of the problem. Unfortunately, it is in my nature to solve problems. The pictures are totally unimportant, but I still have to solve the problem. Especially if it works in my other partition. But in any case, thanks for your efforts!

Revo Uninstaller 2.4.5 is the last free version for Windows XP which is offered as an installer and a portable release. You can get it here: https://www.revouninstaller.com/version-history/. Revo Uninstaller Pro 3.2.1 (installer/portable) is the last paid version for Windows XP. It's a very important tool to get rid of remnants regarding antivirus/antimalware programmes.

I got a reply from Adlice to the supprt ticket I filed in terms of RogueKiller: So what was posted here has been confirmed. RogueKiller's real-time protection was never designed for older operating systems such as Windows XP. But at least we have a scanner that still runs on Windows XP in the latest version.

Fair enough, as long as the conversation is kept directly relevant to the use of Panda Dome on XP, or indeed any other AV program. Sorry, I have now realised that the details of the .NET 4 updates on Revo Uninstaller are not with the actual installation records, as they are called 'Security Update for....' so appear in a different place in the list! Here they all are, enjoy! The last two images have duplicated entries. Why they all seem to have the same installation date i'm not sure, I don't remember doing an OS reinstallation in February 2019!

In my main article about Panda Dome, I posted download links to get the most recent installer. Even a link to a legacy installer.

@nicolaasjan I have attempted to make compatible 64-bit OpenSSL shared libraries using MSYS2. If you would like to test them.

Per abbodi1406, https://github.com/abbodi1406/vcredist#windows-xp-notice Direct link: https://download.visualstudio.microsoft.com/download/pr/566435ac-4e1c-434b-b93f-aecc71e8cffc/0D59EC7FDBF05DE813736BF875CEA5C894FFF4769F60E32E87BD48406BBF0A3A/VC_redist.x86.exe MDL forums reference: https://forums.mydigitallife.net/threads/repack-visual-c-redistributable-runtimes-2020-11-10.76588/page-27#post-1630817 I can confirm that the installer is dual-signed (both SHA1+SHA256), thus it can be verified on XP SP3 (which ONLY supports SHA1 file signatures). As for the installer of version 14.29.30139.0 referenced in the "community.pcgamingwiki.com" site, this has the direct link below (courtesy of abbodi1406): https://download.visualstudio.microsoft.com/download/pr/b929b7fe-5c89-4553-9abe-6324631dcc3a/4C6C420CF4CBF2C9C9ED476E96580AE92A97B2822C21329A2E49E8439AC5AD30/VC_redist.x86.exe but it is only SHA256-signed, so I'm not sure if its signature can be verified under XP SP3 : Just my 2c ...

Just running the proxy in the background doesn't mean it is also used by a programme. What I meant is whether you're running ProxHTTPSProxy system-wide or not. In any case, Panda Dome has to use the proxy. Thats why I had to configure Panda Dome to use it, however, for activation only.

I have already provided a solution to activate Panda Dome under Windows XP. Read this post: and this one:

As part of my work on ytBATCH, I have investigated many ffmpeg releases that are supposed to be compatible with Windows XP. These include, for example, the releases from @Reino, sherpya and @autodidact. The relatively new ones from @Reino and @autodidact work well with YouTube. But when it comes to TV streams, it's a completely different story. Their latest ones in particular have considerable problems with TV stream URLs. On my old Windows XP computer, negative performance changes are immediately apparent. FFmpeg 3.4.1 from 2017 is too old and can no longer access TV stream addresses. The newer releases 7.1 from 2024 and 8.1 from 2025 require much more CPU power than before. They are therefore problematic for older, weak Windows XP computers. That's why I still have been using ffmpeg releases from 2019 for TV stream addresses.

Yes. All builds of ytdlp-silent-xp.exe have been tested by me on my Windows XP computer. Unfortunately, none of them are working, not even the latest.

For anyone who isn't familiar with LUA scripts. My mod of the LUA script yt-dlp4vlc does the following: YouTube links entered in VLC are now processed by the YouTube downloader yt-dlp and are then transferred to VLC and played back. Credits to FalloNero. The console window is hidden either by a PowerShell command or by the tool hidecon if the latter exists in VLC's programme folder. Video links without appended quality parameter can now be played again with the quality preset by the user in the VLC settings. The default video codec has been preset by me to h264 so that even older hardware is supported. This can of course be changed in the script by the users according to their needs.

@DesWer on GitHub in the Rumble thread asked me for a link to my Python for XP environment. Well, here it is, complete with all current dependencies installed: Python311_XP-folder.7z Extract it to e.g. C:\Python311 and add that folder, plus C:\Python311\Scripts to your PATH. Instead of building the standalone executable with PyInstaller, you can use pip to install the Nightly build directly: python -m pip install -U --pre "yt-dlp[default]" That will install/update the dependencies as well. (yt-dlp Nightly from 2026.01.02 is already included)

The old download link I used in my ytBATCH releases was https://github.com/nicolaasjan/yt-dlp/releases/latest/download/yt-dlp_x86_Windows-XP.zip which is no longer working. As you can see, at some point you changed the file name of the ZIP archive. For me. no problem. I have already rewritten the yt-dlp update module for the upcoming release of ytBATCH.

hmm, confirmed v30i and v31 also works. and it seems to be broken in v31a and later. since there is no release note and/or changelog for v31a, nothing is known besides ntdll and kernel32 are newer in v31a.

WinNTSetup 5.4.2 - fixed could not start minimized - fixed some wimcapture issues - fixed possible buffer overflow in some minwin functions - fixed crash on malformed Win10Builds.ini - updated ux and drvinst patcher for Win11 build > 28000

https://github.com/LordOfMice/Tools/blob/master/nvme9x.zip High speed of executing large (>64K) I/O requests. Custom DMA handling instead of using OS service. Large requests (from 64K to max size supported by controller) executed as fast as in NT now.

FFmpeg update. XP: shared static libfdk-aac VISTAx86: shared static libfdk-aac

Here are some facts about the sizes of SUPERAntiSpyware's virus definition files from 2024 to 2026: SASDEFINITIONS.EXE 210,345,304 bytes 07.07.2024 SASDEFINITIONS.EXE 214,737,232 bytes 27.05.2025 SASDEFINITIONS.EXE 353,800,400 bytes 23.01.2026 The virus definition file SASDEFINITIONS.EXE has increased by 4,391,928 bytes from July 2024 to May 2025, which is a normal increase of approx. 2% within 10 months. From May 2025 to January 2026, however, it increased by 139,063,168 bytes. This is an unbelievable increase of approx. 65% within only 8 months and definitely a no-go. The file has become totally bloated for whatever reason. Now, I finally know why the download takes much longer time than before, apart from the catastrophic download speed on their update server, which is used by the programme.

I don't think there will be many users of the 64-bit version that also have an old local DNS resolver, but nevertheless I will downgrade curl_cffi to version 0.13.0 for the next release. Forcing these modern DNS extensions on a legacy-OS target is counter-productive anyway. Meanwhile, here is a 64-bit test version, so we can see if curl_cffi 0.13.0 doesn't give issues for you with 2026.01.19.143412.

@Dave-H Do you regularly maintain your proxy? For ProxHTTPSProxy to function properly, it must be maintained. From time to time, the Certs folder must be emptied, and the cacert.pem file must be updated. Only then will it function properly and can connect to the Panda servers. Then you will finally see the connections established to their servers.

I can't confirm this statement. When I installed Panda Dome 21.01.00, I was only able to activate the Panda account with the help of ProxHTTPSProxy, using the necessary proxy settings in Panda. Connections to Panda's servers were immediately visible in the proxy console.

I don't have Revo Uninstaller Pro, only the free version, but will this do? Putting my moderator's hat on, I have to say that any prolonged discussion about POSReady updates, C++ Runtime versions, or .NET versions, would be of course off-topic for this thread. I know I've been guilty of posting off-topic remarks here myself recently, but if this is now likely to be a prolonged discussion, it needs to be in a new thread please. Cheers, Dave.

Here is a short report on the Panda Dome version 20.02.01 currently installed on my computer. This version runs very well under Windows XP without any performance problems. This Panda Dome version also does not significantly delay Windows startup. It only takes approx. 2 min. This is a good value for my old box. However, I have not yet been able to solve one problem. The application background remains green. No images can be loaded. Although it's not important, I don't understand why this is the case. Here is a screenshot of this issue and one taken from the settings where the image can be selected: This issue has been the case in all versions of Panda Dome (18.07.04, 20.02.01, 21.01.00, 22.00.00, 22.02.01 and 22.03.05) installed on my Windows XP partition with all POSReady updates. This issue doesn't exist on my Windows XP partition without POSReady updates.

I think for a free version Panda Dome is ok. If it is running correctly, the impact is low on RAM and CPU compared with Avast or other security suites in the past. And once again, it is free of charge in the basic version. BTW, I do not need a firewall or VPN. I have already been using the best firewall, Windows 10 Firewall Control Plus XP. And I have several paid VPN services.

First of all, thanks for uploading the files! I was surprised to learn that there is supposed to be a .NET Framework version 4.0.30320 for Windows XP. I couldn't find anything about it in any official source. In any case, your installer "Microsoft .NET 4.0.30320 Full" is the same one I have, and it has the number 4.0.30319.1. Presumably, at least for Windows XP, there is no version 4.0.30320. You can find out your current version installed with the following command: reg query "HKLM\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full" /v Version Although it is actually Microsoft .NET Framework 4.0.30319, I have nevertheless found a reference to version 4.0.30320 in Windows XP. Apparently, the Client Profile and the Extended are assigned exactly this version number:

Tha's why I suggested to try first version 15.0.0. If this version doesnt work either, you can forget about the 15 version series and try the 14 one.

BTW, I contacted the Adlice support and filed a request in terms of XP-compatibility. They opened a support ticket. We will see what comes out of it.

What do you mean by this version?

Nonsense! How is it even possible to "fake" profile views?!?!?! And you had been told before, it's a real social site. Stop calling it fake. You need to listen to what the supervisor tells you.

The LUA script yt-dlp4vlc reads the video quality preset by the user in VLC's settings only once while starting the player. If this setting is changed by the user at some point, the player has of course to be restarted to take the new setting into account.

Without a correctly installed and running HTTPSProxy, you will get this message each time under Windows XP when trying to activate Panda. Whether the proxy is working correctly or not, you can see in its console window. If you are not familiar with these proxies, then you should read my article ProxHTTPSProxy and HTTPSProxy in Windows XP for future use.

My new beloved superhero, @autodidact : https://msfn.org/board/profile/398146-autodidact/content/ This most kind, generous and altruistic person is also a member on the videohelp.com forums, where he's been releasing Win7-compatible FFmpeg builds periodically; and here, he's doing the same for Vista/XP users; in some way, he's picked up the baton from Reino (whose very old, SSE-only, PC with XP died one year ago) ... As I said, it was by necessity ; but I don't think he's regretted it ...

https://github.com/LordOfMice/Tools/blob/master/nvme9x.zip Full handling of Windows 9x specific requests that use Linear Scatter/Gather buffer. Update is recommended. Install either by reinstalling the device or manually copying nvme2k.mpd and nvmevsd.vxd to %windir%\SYSTEM\IOSUBSYS\ The problem and solution are described in detail in https://github.com/techomancer/nvme2k/issues/15 There are no remaining issues, except for slightly slower performance under Windows 9x than under NT. This turned out to be an issue with the implementation of standard OS service for DMA (Bus Master) controllers – it's almost impossible to receive a real requests for the controller longer than 64K over any length of time. Solution is possible, but this would require custom implementation, using non-standard code.

I told ya it was RAM . You need to remove all and test with only one module inserted. BTW , RAM testing tools are not good in my opinion. I had a funny case when the guy that was checking my faulty RAM at the store had 100% good test results and then he just couldn't boot into windows ! I also remember some similar case when my DDR2 RAM module no. 1 developed a faulty sector after a couple weeks of usage in a brand new PC . As for the second hand items , never use them in a PC where you do something important . People just do not know how to handle such items , just don't . Most never heard of static electricity and UPS.