Keeps on crashing...

My Guild Wars keeps on crashing on me. It is seriously pissing me off because I get kicked out of Tombs a lot. It used to run perfect, no lag and all, before, but some time ago, I got a virus in my computer. I IBM-Restored it (kinda like System Restore, only much better), and it's giving me these problems since.

I don't get looged off to my login screen, sometimes Guild Wars just minimizes and closes it self, sometimes I get this message:

http://img342.imageshack.us/my.php?i...ntitled6uu.jpg

I have above minimum requirements for this game, but my video card is i915 (newest one). Some of you might be thinking the graphics suck, but really, they dont. Look:

http://img342.imageshack.us/my.php?i...victory2nl.jpg

It used to run perfect. Now it doesn't and I need help... Thanks a lot!

Hard to tell with out actually seeing the problems.

I have had virus problems in the pass that the only way to fully get rid of (some) them is to reformat the hard drive. A true FDisk reformat. It is something no one wants to hear, however after doing it your system will be snappier and you will feel better.

When was the last time you reformated?

around 2 weeks

hmm...I am NO super geek. Looks like a bad stick of ram. If you have more then one stick try running it with one of them. Try proccess of elimination on the ram sticks.

But then again...I am NO super geek.

Do a google search on that error number too.

I tried switching it for my other computer's RAM (also 512). It still gives me the problem.

Well, I think I might as well Reformat my computer... But I don't have a Windows XP CD. How do I reformat without the CD? I have an IBM computer if it helps.