I run Windows 7 64-bit and I tried updating my graphics drivers today. I have a Sapphire Radeon HD 6870.
I think the driver version I had installed was 12.4, and the driver I tried updating to is 12.8.
I had been using Ray Adams' ATI Tray Tools for a long time, for clock speed and fan speed control. Since my last update to a version of it that supported my HD6870 it lost fan control, so I used MSI Afterburner for that purpose. I hadn't been using Catalyst Control Center because of troubles in the past, but decided to give it a go with this driver update.
What first happened was that during the computer's restart after the new driver install, is that its first attempt to power itself back on failed. It turned on, turned off again after two seconds, then turned back on and tried to boot. It wouldn't boot. Having had troubles with Catalyst Control Center before I suspected it might be because I chose to install that along with the drivers. I went into safe mode, but after a minute, Windows froze while in safe mode.
I hard rebooted and went into system restore, thankfully I had a restore point only a few hours old from installing a Java update. I restored and booted back up normally, but after a short time it froze again. I booted to safe mode with networking (to seek help over IRC) and did a rollback of the graphics driver. Booted up normally again and tried to download and install my previous driver version. It froze again.
I went back into safe mode and removed ATI Tray Tools. I went back into normal mode and successfully reinstalled my version 12.4 drivers. It seemed to work for many minutes. Then it froze again.
That was 20 minutes ago. Since then it hasn't frozen, but since it froze last time with the exact same configuration I have now I'm rather worried it will continue. In my Event Viewer I have 6 instances of "Critical" events with "Source: power-kernel". No other information except timestamps.
EDIT: Yep. It froze again. I'm not in the clear.
EDIT 2: I removed every part of the AMD driver software thing and used guru3D's driver sweeper, and tried to install another older AMD driver, this time 12.6. Windows keeps freezing. I can report that it seems to crash faster when in a videogame.
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