Intel 82865G graphics controller issue?

I have an HP Compaq desktop computer. It is my go-to computer until I can get my good one fixed. It has the Intel 82865G chipset, and I am having some issues with it. Apart from the fact that it sucks for playing most games (lol), every so often, under unkown circumstances, the computer with frezze, and I will get jumbles squares of random colors that with dot across my screen. I have no idea what caused it, I have no idea under what circumstances it occurs, and I have no idea how to fix it. Help would be appreciated. I will upload a picture of what happens the next time it occurs. Thank you.