Give more info please
-How the installing windows passed? were there problems?
-Are you install the drivers on a fresh instaled Win? (there could be problems if you update exisiting drivers)
I am with HD4850x2 myself, had no problems installing drivers on Win XP 64 bit.
Are you sure the drivers are for the right version of Windows. They Must be exactly for Vista 64-bit, except if there is an explicit note that they are compatible for both 32 and 64 bit versions of Windows vista (unlikely).
CPU: Phenom II x4 940
GPU: HD4850 Sapphire
MB: GA 790x-UD4
PSU: 550w CoolerMaster
I tried that many times but no changes...There is one option of functioning...When I install the driver without Catalyst Control Center, the computer starts for a first time...but after another restart there is 20%chance of getting to Vista(sorry for my english)
Do you think that flashing new BIOS would help?I read on some forums about the same problem with HD4850 and i did not found exact solution...Only solution I found is that without installing CCC,but it is useless when I want to reboot my PC
Hmm, one (possibly random and probably not helpful) idea. When you installed your motherboard, the standoffs were metal and you didn't put any insulating washers between the screws and the MB, correct?
You could try updating your MB BIOS (can't hurt) and do a careful check to make sure all the BIOS settings are correct. Also, if this is a new build I would recommend reinstalling Windows and starting over. Then, maybe try the drivers from the CD first (or the newest from online if you already tried the CD ones first).
Also, I may be wrong on this, but you may be able to turn off the Vista autorestart so you can actually read the Blue screen (assuming it says something). Also, check you system logs to see if it lists a cause or suspect.
quick note - I had vista 64 installed with a Sapphire 4850 and the latest drivers (9.**), it continued to give me BSoD, I'm fortunate enough to be a college student with access to the every version of windows, so installed vista 32 and the recent drivers worked fine, so I went back to my vista64 and installed some older drivers (8.8) and they worked fine, the major difference between the new (9.**) and the old (8.8) is the CCC "overclocking" isn't present in the 8.8 drivers...
try and find the older drivers, that might work... (I had a disk, or I'd give you the link)
Hmm, yours is weird (as it has an F2 newer than an F3). Maybe a MB BIOS flash isn't worth it, but you should at least reset the BIOS to default and reenter everything just to be safe. If you would like to try one, there is no harm in it (I've flashed my gigabyte board several times and they normally make improvements). Maybe try the F3 one.
As for a card BIOS, I've never messed with that before so I don't know. It depends on what the problem with your card is.
When it does run, have you gotten a chance to run a program that will stress it? Like 3D Mark or a game?
Also, have you gotten a chance to run a older driver?
Was there any random software that came on your driver CD (like mine came with a card health program)? When I uninstalled those, the comp started saying there was no video driver and doing weird things. Maybe install those if you have any.
Also, in what driver version is Overdrive not showing up? They just put out a new version of it, maybe that new one is incompatible with your card BIOS.
Well, you could try using non-DVI (VGA cable) or another monitor to see if that helps (also check if it detecting your monitor correctly). Could also try installing the drivers, then going in in safe mode and turning all the Graphics settings down low, then reboot. And one last ditch effort, turn off USB legacy detect in BIOS.
May 14, 2010 11:53:19 AM
i'm having totally da same problem with you !
and i'm running on vista x64 ultimate
the problem solved when i didnt install the CCC, and just purely driver installed.
and my spec is phenom II x4 955 / cooler master extreme 500w / ati radeon hd4850 JUST SAME AS yours
izit urs solved?
i think i might not use ati radeon anymore , i will switch to SLI or what that dont caused this problem !!