agp reads

[kisserprostyler]

I've been using my radeon 9550 like this since I bought it( the games run decently) but I cant turn on agp reads on smartgart , otherwise after a few minutes of playing my system hangs and the screen goes black.Is there a way to solve this? Or my mobo and my gpu are not compatible? I have agp writes turned on( fast writes too) pci read and write are both turned on also.
I tried running it on 4x,8x, disabling fast writes, played with the bios settings(PCI IDE busmastering, aperture size, etc.) no overclocking whatsoever , installed a new fan on the gpu, but I cant turn it on without my system giving me blue screens or black outs. My system specs:
Mobo:Acorp 4pm800mnl (Via pm800 chipset)
http://acorp.com.tw/eng/product_s.asp?keyword=4pm800mnl
Processor:Intel pentium 4 2.1
512 mb ram
Gpu: ATI Radeon 9550 AGP 256 MB
Sound card: Audigy 2 ZS

 

[wolfram]

Download the latest chipset drivers from VIA. I heard some compatibility issues between VIA chipsets and AGP ATI video cards.

 

[kisserprostyler]

kk

I tried uninstalling and reinstalling both of them ( chipset and graphics card) but it didnt work, Is there something else that I could try?