I installed the latest beta drivers from nvidia earlier today and am now experiencing problems. I am 90% certain that the first issue arose post driver install, but there's a slight chance that it occured before.
Just a warning, backup first, or at least wait for a week for others to find any major issues.
Symptoms are failing to boot and a very quick bluescreen during the windows icon (it did boot once, but only once), stalling at classpnp.sys in safe mode and then having the same quick boot. I've tried repair from the win7 disk, that got me a slower bsod, with the stop code 0x000000b4, which appears to be video init related. Hence the warning. I'm currently restoring from a backup, to isolate out this being a hardware problem.
My other option is that I've a hdd failing, (the other one of a pair brought at the same time failed about 2 months ago), we'll see after the restore.
Or that my GTX470 has given up, but i've had no warning signs about that.
Or that my M4 has failed spectacularly, the repair didn't seem to find an installation that I was altogether happy with, a 0MB win7 installation?
More about :latest beta nvidia drivers potential warning
I just made another thread about it on accident before I saw this sorry but yeah, same exact thing happened to me. Installed the 290.35 driver and now I get unmountable boot volume bsod right after windows screen. I can't boot in safe mode or in last known configuration so I'm basically stuck. I was going to check to see if there was anything I could do before I do a fresh install....
Well so far, i've attempted to restore twice from windows home server, once fully, once just the system drive, both seemed very slow and only partially responsive.
I've now reset the bios, removed the main gpu and am using a secondary one (feeling is its less likely to an issue) and am again trying a system drive restore, seems more responsive.
Leads me to think of a couple of things, bios corruption (as the issue presented after being put into standby, could the cat have turned the UPS off? and back on again, i've had off before but never off and on (there's room for an aliens quote about them being just animals here)).
GPU failure, Secondary HDD failure, Sata controller failure, bad memory.
The increased responsiveness after the removal of GPU could be it having to load fewer/simpler drivers, or it could be a bad GPU.
My money for now is on the Bios reset being important.
Prior to this i've had no issues since changing from my sandforce dive to an M4. Hence thinking it is a 'loaded' or rotating part that is an issue, and not the memory. The matched pair to the data drive failed about 2 months ago and i've still got its warrantied replacement in a bag, so this one could be due to fail.
All in all a bit of a puzzle, am becoming inclined (loosely) to not believe it is the drivers, but i would be un-surprised if it was.
If any one hasd any ideas please put them forward, but i'm mainly using this as a place to dump the thought processes in case they help someone else.
looks like HDD failure, after running off another HDD whilst testing the original all was well, swapped back to old hdd and i'm getting bsods again. Its sister drive went about 3 months ago, so I'm happy that this is the cause.