worked for me. well done

I only had this prob when I installed a 9800xt card. For some reason it did not appear prior to that. I was running an earlier ati card but for the life of me I can't remember what it was.
The "FIX" was throwing out the 9800 and putting an Nvidia 6600. Inferior I know but it worked. All agp as well.

Thank You, cobrakaun. It worked for me. My kid just got Aion a couple weeks ago and had been getting the "crashes to a black screen with sound" problem. He has an ATI Radeon 3850 video card and the latest video driver or more ventilation, etc didn't help.

This worked! My kid's happy, I'm happy. You're great.

Hi, this forum helped me find the fix for my PCIexpress HD4850.

So for those who don't have a CPU to AGP bridge, here's the thing that worked for me so far:

Instead of looking for "CPU to AGP", look for "PCI standard host CPU bridge" there should be a few of them.

Before you change anything double click one of these and note the driver version, mine was 5.1.2600.2121.

All you have to do is update the driver for all these in the same way the first poster of this topic said, except obviously with the "PCI standard host CPU bridge" driver.

After I did this I noticed that the driver version had changed to 5.1.2600.5512.

I tried running OCCT GPU again just to check and it completed flawlessly, before I did that I always got a blue screen about 5 minutes into the test with the dreaded infinite loop on ati2dvag.

Hope this helps PCI express users.

didn't fix my issue. sadly, oh well. Guess I'll just have to get a new comp because this is driving me insane.