Hi Jeff,

Hardware issues can cause freezing, black screens and other
errors. Also, your drivers should always be kept up to date.

Try the following steps one at a time to try and resolve the issue.
I hope this helps. Please post back if you have any questions! :-)

1. Update DirectX and your Chipset, Sound, &Video Drivers:
For all Video / DirectX / Game and Hardware Issues, I have a
Checklist of Solutions at: http://NibblesNbitsVideo.tk

2. Dust your fans, vents and components using a 1/4" paintbrush
and a hose vacuum. Use compressed air for hard to reach places.
Set a housefan to blow cold air into your case to expose an over-
heating issue.. If it works add more fans or replace defective ones.
Use this Motherboard Monitor Utility: http://mbm.livewiredev.com

3. A faulty power supply can cause STOP errors, random reboots,
and black screen lockups. One way to test for that is to check the
wattage sticker on your power supply and then calculate your need
http://www.jscustompcs.com/power_supply/ (Min. 350 for gaming)

4. Test your RAM using: http://oca.microsoft.com/en/windiag.asp

--
Cheers, Windows XP MVP Shell / User
Jimmy S. http://mvp.support.microsoft.com

Game FAQs: http://support.microsoft.com/default.aspx?scid=FH;[LN];gms
Visit my Zone.com / Gaming Helpsite: http://nibblesnbits.tk or Call / Contact
MS Support at: http://support.microsoft.com/default...d=sz;en-us;top
My advice is donated "AS IS" without warranty; nor do I confer any rights.
__________________________________________________ _______


"Jeff" <Jeff@discussions.microsoft.com> wrote in message news:E6793C7B-0C29-41EF-96D8-296CD81D8F7A@microsoft.com...
|i have recently upgrade my graphics card and it has been running very well
| for a while until the last few days where it restarts by itself whenever i
| run world of warcraft, and by restarting i mean the screen going all black
| and starting over (as if i pressed the restart button on my machine). now, i
| have tried everything i can think of to solve this problem, but none of them
| worked. i tried upgrading my ram, defraging my discs, setting my graphics
| card and in game resolution to full performance instead of quality, disabling
| the 'restart if error occurs' function, and probably some other stuff that i
| forgot. my computer seems to run fine if i dont run any games (it is even
| restarting if i play warcraft 3). my system specs are:
|
| pentium 4 2.8GHZ
| 1GB DDR ram
| ATI radeon 9550
|
| thx.