System hangs while trying to download or watch on line videos

[Nic303]

My system hangs while trying to download someting from internet or watch videos.

In Firefox & IE cpu raise to 85%

I have AMD Dual core optimizer for CPU (Athlon X2 5000+) and latest drivers for network adapter(Realtek 8169/8110) and video card(8600GT)

In stress tests the system is stable.

[bravosix]

What download manager software do u use?

May be there's problem with your download manager.

[Nic303]

I'm not using any download manager.

[cluberti]

My system hangs while trying to download someting from internet or watch videos.

In Firefox & IE cpu raise to 85%

I have AMD Dual core optimizer for CPU (Athlon X2 5000+) and latest drivers for network adapter(Realtek 8169/8110) and video card(8600GT)

In stress tests the system is stable.

Hmmm... You don't have a download manager, but you're seeing high CPU when downloading files, and it spans two different browsers. The only thing in common between Firefox and IE on a Windows machine is at the socket layer and the filesystem itself, so either it's an LSP on the network stack (like antivirus/antimalware, 3rd party firewall, etc), the network driver itself, or a filesystem filter driver (again, antivirus would have a hook here).

[PC_LOAD_LETTER]

Id definitely look for signs of malware or disable your AVs real time protection to see if that alleviates your problem as cluberti suggested

firefoxs auto session save feature can also cause problems too (though it wouldnt explain the IE issues)

http://lifehacker.com/5342636/how-to-fix-annoying-youtube-jumpiness-in-firefox

you could also use disable any toolbars/browser extensions/plugins (often crap toolbars install for both browsers)

You might try the Adobe 10.1 beta that along with current nvidia drivers, supports GPU acceleration which could take some of the load off of the CPU

http://www.nvidia.com/object/adobe_flashplayer_plus_nvidia.html

[Nic303]

- All hard disks are clean (s. with Avast, Malwarebytes and Spybot)

- The real protection is enabled only in Avast.

- I have no toolbar installed.

The problem appears randomly...

[cluberti]

Again, given it happens when files are streamed or downloaded (streaming video, etc and downloading files), this is likely at the network layer. Disk seems unlikely at this point.

You can confirm it repros simply if you download a file from the internet, nothing special otherwise?

[DigeratiPrime]

You should disable the AV to see how much it is responsible.

Might also want to run a 'netstat -e' to check for network errors - though I don't think this would appear in cpu usage.

[Nic303]

With an older driver the internet works fine.

But i have to disable/enable network adapter after Windows starts - everytime.

This is why i've installed the latest driver from Realtek.

Edited February 17, 2010 by Nic303