Windows 7 Install Fail with Sapphire Radeon 4850

I recently replaced a dead Geforce 8800GT 512MB with a Sapphire Radeon 4850 1GB X-Vapor and attempted a clean install with Windows 7, both 32-bit and 64-bit. The initialization works fine, but at the end of the installation I get a blank screen and no response from the system, requiring a reset.

When I start in Safe Mode, Windows 7 shows "Setup is preparing computer for first use ..." and then tells me that I cannot complete installation in Safe Mode.

With the Gefore 8800GT, Windows 7 installed without issue.

My computer stats are as follows:
Antec NeoPower 550w with 6-pin PCI-E connected
Gigabyte MA-790X-DS4 motherboard with latest BIOS (F9)
4GB DDR2 800 RAM
AMD Athlon 64 X2 6000+ 3.0GHz
Western Digital 250GB Sata II drive
HP Optical Sata drive
Onboard Realtek Audio and Lan
MS PS/2 keyboard and mouse
Windows 7 Home Premium
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  1. For the record, I hauled out an old copy of WinXP SP2 and installed and upgraded to SP3. Under WinXP SP3, everything installed fine and without issue. I am beginning to suspect the 3D part of the card is defective requiring an RMA.
  2. Best answer
    I Dont think its the problem of the gfx card because one of my friend also have this same problem and i think it may be a driver problem in windows 7!
  3. Thanks, Aneesh. I tend to agree. I've got the card setup and running games fine under XP SP3, so a driver problem with Windows 7 makes sense.
  4. I've sold my copy of Windows 7 and intend to stay with WinXP until I can find a decently priced copy of Vista. I have a copy of Just Cause 2 that requires either Vista or Win7 and I really miss playing that game. Even with all its flaws, Vista make actually be a better investment than Windows 7 if I choose to leave WinXP behind.

    Irony can be quite ironic. ;-)
  5. Best answer selected by mwpeak.
  6. Thanks mwpeak,Try Vista too,bcoz xp only supports dx9,so if you need to run games in dx10 mode,you will need to use vista!
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