Have been using Vista Ultimate x64 since Beta 2, went through upgrades to RC1, RC2 and finally RTM. I am NOT a person who reformats constantly, I loathe reformatting as I can't even think of going through all the manual tweaks and customizations I do. I do not make images of my drive with software like Norton Ghost, I only manually backup files. With that aside.. vLited my Vista (retail, not RTM, still Ultimate x64), and have ONLY had this problem on the vLited version. If I had any idea what was causing it, I would've fixed it, but I don't. I tried to search for similar issues but either they weren't resolved, caused by viruses and such, or I tried them and they didn't work. Using the Classic start menu for reference. Control Panel (Start Menu and Computer shortcuts) doesn't open, Network and Sharing center (network icon in notification area) doesn't open, Properties (right clicking on Network) doesn't open, Properties (right clicking on Computer) doesn't open, Personalize (right clicking desktop) doesn't open. O&O Defrag opens 50% of the time. Windows Update (start menu shortcut) doesn't open. Right clicking on Folders/Files and selecting Properties takes 10 seconds to open. Using the 3D 'switch between programs' thing with the quicklaunch shortcut causes it to hang for 10 seconds and then open the normal alt+tab switch. Using the Windows key + tab shortcut causes it to hang and not open at all. Opening an image in Windows Photo Gallery takes 10 seconds to open. As I said, I know for a fact that this is due to my vLited install, though I have no clue as to why. I went over my prior vLite'd install, as it happened on the first restart after installation was fully finished and removed less of what I first removed. It worked just fine, multiple reboots, ended up customizing my install back to the way I had to before I refomatted for the first time. I'll be updating the post with more things I find, and I've also attached my vLite Preset file for diagnostic if anyone cares to check it out. If anyone could help, that would obviously be wonderful, and I'd be grateful to have this problem resolved WITHOUT reformatting for the 6th time. For more clarification, I have a 5 year old Windows XP installation I've used until I got the first beta of Vista, played around with it for a bit, but still used my XP installation. When my XP install died due to.. overclocking (*cough*) I actively used Vista ever since. That 180GB of data is still sitting there (though, or course, I backed up and deleted as much as I could to make room for more and more, and also backing up of my current Vista partition before reformatting that for the first time). I also recently used Vista's disk management to make a 3GB partition and install stock XP on it to use partitioning software to extend my 30GB Vista partition to 85GB by shifting free space from my storage (dead xp) partition to the Vista one. So, summed up, I have a dead XP, then active Vista, then active XP, on 3 partitions, respectively. vLite.ini