"The memory could not be read" crash in Source Engine games.

[CyanLime]

Occasionally while I am playing a Source game such as Gmod or Counter-Strike, the game crashes, giving me an error which says something like
"The memory at [insert hexadecimal bs here] referenced memory at [insert more hexadecimal bs here]. The memory could not be 'read'"

It only happens occasionally, but it is plenty enough to be annoying. I am running on Windows XP SP3, I have 2 gigs of ram, and am using a "Nvidia GeForce GT220" video card.
Is anybody else experiencing this problem? And more importantly, does anybody have a solution?

Thanks; -Cyanlime

[djjkxbox360]

I used to have this problem when I was on XP, but I don't think that's the problem. Verify the integrity of game cache of Counter-strike. All sources games share a similar file so doing the verification for 1 source game will hopefully fix the problem for them all.

Make sure all your drivers are up to date also

[Magmacow358]

If all else fails, reformat windows.

[CyanLime]

I'm aware that this is kind of a necrobump, but it is six months since I made this topic and I am still having this problem.
I have reformatted my PC and updated my drivers since then, but to no avail.

The crashes are occuring several times a day now, and it's starting to become difficult to bear.
Any ideas?

[Metalcastr]

Run Memtest86 and see if it gives any errors.

[ZoMbIe GAM3R1]

i am getting more ram 4gb should do good but i got 8gb this should fix i hope