Ok, it's very possible that this is posted somewhere already, but really, I'm just too lazy to search.

Here's the deal. One of the rigs I built a while back had a dead motherboard. I ordered a new one, and set the computer back up, formatted, installed windows, blah blah blah. I had the ingenious idea to use BOINC (specifically Rosetta@home) to stress test it and make sure no other hardware was bad.

Not long after I got BOINC installed, the display started disappearing on me. When it came back, it acted as if there were no video card drivers installed. The display was very laggy and slow, like it is before you install a driver.

I put a different video card and finished up the rest of the initial installations that I needed to accomplish. I put the Radeon 9800 pro back into the system, and updated to the most recent catalyst drivers. It seemed okay, but then the display disappeared again and when it came back it was choppy again. I reverted to the previous version of catalyst drivers, same result.

Finally, I stuck a Ti4200 in it, and it works fine (as far as I know).

Today, my friend (that runs Rosetta@home for me) told me his computer keeps crashing. He described the same exact problem that I had with the PC I just reconfigured. His card is an x800, he thinks.

Is there a fix for this? Does anyone know what exactly is causing this? I'd hate to lose a cruncher over this, and he wont run it if it's going to crash his system constantly.

I can start BOINC and suspend Rosetta and come back in 40 minutes and everything is ok.

I have also tested it with Einstein@Home and there are no issues with it.

When you say choppy... are you expecting the graphic to rotate smoothly? Or are the frames unclear?

There is a setting in your Rosetta Preferences for how many frames per second and how much % CPU to spend on the graphic. Do you have these set differently for different "locations"?

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Rosetta Moderator: Mod.Sense

It's like a fresh install of windows without a video driver installed at all. The settings are all at default.