I have problems with my VGA Creative TNT2M64 card on mobo with VIA chipset (GIGABYTE).

I can play all games I think,but the problems brings common work with Inet and other Win. applications.After a few minutes (usually when scrolling) the system hangs up, the window with scrolbars scrolls up and down or I see window frames I had closed or switched off, so they can't be there!
There also problems with icons.

The problem is solved, when I disable cache in BIOS, but the system is slower.

Could anyone tell me how to repair it?
And why LINUX 6.1 goes well all the time?

Thanks a lot