Tonight I tried upgrading from my GTS 250 to a GTX 470. It'll boot into the initial login screen, but after putting in the password, it goes into the "Welcome" screen with the little loading circle spinning. It'll either freeze at this point (cursor frozen too) or it will go into a black screen and freeze up moments later.
I've tried all the available driver revisions for the 400 series, all of which present the same problem. Between each driver installation, I uninstalled and removed them with Driver Sweeper in safe mode. For the time being, i've reverted back to the GTS 250 which works perfectly.
After some research, I didn't find any definite answer for this specific problem. There was someone else with the same exact problem, but no solution as of yet. There was a solution for a similar problem where the boot time was really high and performance was severely degraded. That involved remapping memory values or something. But seeing as I couldn't even make it past the welcome screen, i'm thinking it's a different problem.
[]Edit: A lot of research I found on the topic is by a guy posting on a lot of forums by the name "unaligned". Here are some of his threads:
http://forums.nvidia.com/index.php?showtopic=168566
http://www.tomshardware.com/forum/28...ot-performance
http://social.answers.microsoft.com/...d-a84de95f831d
The thread explaining the memory remapping I was talking about: http://foldingforum.org/viewtopic.php?f=38&t=15472
I'm beginning to re-suspect the memory issue. They explain it well in that thread. In the link from tomshardware forum, there's an idea suggesting it's a sound driver issue since fermis have built in sound, so there may be a conflict there.
[/end edit]
I doubt there's any fix for this short of nvidia fixing the issue in their next driver revision. I'm thinking this might be some obscure issue/conflict with another piece of hardware, which I would replace if I knew what it was.
If you're having similar issues, you should also definitely consider filling out NVIDIA's driver quality assurance form here. This doesn't seem to be a common problem, so the more feedback they get, the more likely it is to get fixed.
Specs are :
Mobo: MSI X58 Pro LGA 1366 Intel X58 ATX Intel Motherboard
CPU: Intel Core i7-920 Bloomfield 2.66GHz LGA 1366 130W Quad-Core Processor
RAM: WINTEC AMPX 3GB (3 x 1GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Triple Channel Kit
HDD: Western Digital Caviar Black WD1001FALS 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive
PSU: Thermaltake 850W Power Supply
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