- Jun 8, 2013
- 5
- 0
- 10,510
Recently upgraded from my old Sapphire Radeon HD 4860 to a Sapphire HD 7750. I have had 2 distinct problems...one being the card seems to be only running at a max bus of x8 instead of x16 and the other being an intermittent error that causes my screen to go black for a second or two (when gaming its "display driver has stopped responding and has recovered"). When not gaming my screen just blinks black for a second or two then returns..no hard lock ups.
As far as the driver not responding i have tried multiple things to fix this problem. I uninstalled and reseated the card multiple times (using the amd uninstall and driver sweeper to clean). I have set my TDR delay to multiple values and then to zero to disable it. I ran memtest86 to verify i didnt have bad ram. i have updated both my bios and chipset drivers to the newest i can get (not a super new motherboard). Its not an overheating issue as its happened literally a minute after bootup of windows, as well as web browsing and gaming. For giggles i also disabled hardware acceleration in both firefox and flash. I have also run stress tests on the cpu and gpu with OCCT to try and crash the driver but so far none of the stress tests crashed it when i performed them. The card is definately seated in the primary PCI-Ex16 slot as indicated by the motherboard manual and i have nothing plugged into the second PCI-Ex16 slot.
The other issue im having is that while my old card showed as a max Bus of x16 2.0 ( i re installed it just to verify) my new 7750 shows a max bux of only x8 2.0 with the capability of a max of x16 2.0. This is shown in CPU-Z, GPU-Z and right in the catalyst control center hardware info. Is there some bios setting i am overlooking? Or is my motherboard just too old to play nice with the card i got?
Any help would be appreciated. Ill throw down some specs on what my system has, its serviceable but far from top of the line by any means.
Asus M4A79XTD EVO
Antec Earthwatts 750 watt PSU
AMD Phenom II x4 945 cooled with a Corsair Hydro H50 Unit
6 gigs of Corsair XMS ram
Sapphire Radeon HD 7750 1GB DDR 5 (the video card in question) using the 13.4 catalyst drivers
Windows 7 x64 with SP 1
Fairly standard Toshiba sata cd/dvd drive
Western Digital Blue 1 TB sata drive, 7200 RPM 32 MB cache
Soundblaster Audigy Platinum EX
As far as the driver not responding i have tried multiple things to fix this problem. I uninstalled and reseated the card multiple times (using the amd uninstall and driver sweeper to clean). I have set my TDR delay to multiple values and then to zero to disable it. I ran memtest86 to verify i didnt have bad ram. i have updated both my bios and chipset drivers to the newest i can get (not a super new motherboard). Its not an overheating issue as its happened literally a minute after bootup of windows, as well as web browsing and gaming. For giggles i also disabled hardware acceleration in both firefox and flash. I have also run stress tests on the cpu and gpu with OCCT to try and crash the driver but so far none of the stress tests crashed it when i performed them. The card is definately seated in the primary PCI-Ex16 slot as indicated by the motherboard manual and i have nothing plugged into the second PCI-Ex16 slot.
The other issue im having is that while my old card showed as a max Bus of x16 2.0 ( i re installed it just to verify) my new 7750 shows a max bux of only x8 2.0 with the capability of a max of x16 2.0. This is shown in CPU-Z, GPU-Z and right in the catalyst control center hardware info. Is there some bios setting i am overlooking? Or is my motherboard just too old to play nice with the card i got?
Any help would be appreciated. Ill throw down some specs on what my system has, its serviceable but far from top of the line by any means.
Asus M4A79XTD EVO
Antec Earthwatts 750 watt PSU
AMD Phenom II x4 945 cooled with a Corsair Hydro H50 Unit
6 gigs of Corsair XMS ram
Sapphire Radeon HD 7750 1GB DDR 5 (the video card in question) using the 13.4 catalyst drivers
Windows 7 x64 with SP 1
Fairly standard Toshiba sata cd/dvd drive
Western Digital Blue 1 TB sata drive, 7200 RPM 32 MB cache
Soundblaster Audigy Platinum EX
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