8x agp problem

[face7]

ok everytime i put my settings on 8x agp in the display properties my computer will randomly restart or just give me a black screen and i have to restart it manualy. it does it when im playing games or on the web or when im on aim.
heres my specs

Amd 64 +3500
Xp profesional w/ sp2
Ultra pc 3200 (1 gig) ( 2 x 512)
Maxtor 100gig hard drive
Asus A8V Deluxe
Radeon 9600xt 128mb
(its not my psu either cause i just replaced that with a new 550w one)

i have tried everything i can think of..please help

 

[Ste]

then keep it on 4x. But I don't see how you can change that from display properties, I thought you could only change it in the CMOS setup.

try chaging in the CMOS setup.

 

[Apokalipse]

it may be that the video card is running faster at AGP 8X, and causing it to overheat.
restarts and crashing can sometimes be caused by an overheating video card

 

[face7]

its at 8x agp in the bios as well.......i was thinking the same thing apokalipse.... is there any way i could fix that besides getting a new video card? like add more fans?

 

[Apokalipse]

removing dust in the heatsink and fan, apply some arctic silver 5, or even get a new cooler

 

[face7]

ya...it probably wouldnt hurt to get a new heatsink...