Hey, This has been going on for about a week now and i can't seem to figure out the problem.
AMD 965 3.4ghz Processor
Asus CrossHair III Formula MOBO
8 gigs of ddr3 1333mhz
Asus cucore 5770
Thermaltake Evo Blue 750w PSU
Coolermaster HAF 922 Case
Windows 7 64 bit
Monitor: Asus VH242 LCD monitor 23.6" (1920X1080)
After start up screen goes black and states no input detected. some times it does it a few seconds after windows load other times it lasts a few min. Drivers are up to date. It will run in safe mode I'd prefer not to have to do a fresh install i would have days of downloading to do
Sounds like a driver issue. IMO boot in safe mode and run Driver Sweeper to delete all ATI related drivers (hopefully you already have the driver package downloaded) then reboot normally and install it.
I installed 10.6 and got BSOD at loading about 5 times in a row... did a sweep in safe mode, reinstalled, and it's all good now. Hope this helps.