OpenGL Problems

[pAiNtHeAsS]

starting today, i keep getting visual problems on OpenGL based games like

doom 3
http://img.photobucket.com/albums/v287/pAiNiNtHeAsS/screwydoom3.jpg

mohpa sp/mp demo
http://img.photobucket.com/albums/v287/pAiNiNtHeAsS/screwymohpa.jpg

dod looks fine when it runs on d3d but once i change it to run on opengl, it looks screwy

opengl dod
http://img.photobucket.com/albums/v287/pAiNiNtHeAsS/dodopengl.jpg

d3d dod
http://img.photobucket.com/albums/v287/pAiNiNtHeAsS/dodd3d.jpg

it happens to all my opengl games

ive tried using different drivers but still the same

my system specs are

Intel Pentium 4 2.4 GHz
ATI Radeon 9800 Pro 256 MB
Catalyst 4.10 Drivers
512 DDR Ram
Windows XP Service Pack 2

thanks in advanced

 

[h4vvok]

What settings you running the games at?...

 

[nutcrackr]

Checkerboard isn't usually good I've heard (in the mohpa pic), but since it's opengl it may be somethng else going on have a look over here
http://www.rage3d.com/board/search.php?searchid=292971

Basically from what I just read:
Check heat/fan
Underclock card see if that fixes

 

[pAiNtHeAsS]

i susally run the games at the highest, haven't tried lowering them
ive only lowered the right click--->properties--->settings--->advanced--->3D part

how low should i underclock it?

EDIT:

cant seem to edit my first post

well i get checkers when I boot up also

 

[nutcrackr]

The more underclock the more sure you can be that it's the problem, maybe 20mhz or so.

 

[h4vvok]

All settings high? What AA and AF settings? Setting them beyond the limit of the card can certainly do that...

 

[pAiNtHeAsS]

its not the AA and AF settings. I've tried lowering everyhing and still no dice.

 

[pAiNtHeAsS]

The more underclock the more sure you can be that it's the problem, maybe 20mhz or so.

couldn't edit my last post but

should i underclock both the core and the memory or just one of them?

also, when I try to get it down to 20, i get the VPU recover message.

 

[Gorgon]

couldn't edit my last post but

should i underclock both the core and the memory or just one of them?

also, when I try to get it down to 20, i get the VPU recover message.

don't go more than 20. 20 was example,

you could go for 5 then 10 then 11..etc and try them,

Do you have latest driver ? if yes, then check your heat,