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HELP, unstable gpu at stock clocks

post #1 of 4
Thread Starter 
Hey guys,

i tried to overclock my gpu (powercolor 6950 2gb non reference), i increased the voltage from 1.1 to 1.2 and increased the clocks from 800 to 1000. I only did it for a quick test and then i restored it back to stock because of stuttering and flashing on windows (unstable?). for the past day, my gpu has been stuttering and flashing the display on windows the same as i had OCed but GPU - Z says 800/1250 at 1.1 volts stable. i can still play games like portal and WOW. I have flipped the switch to the second bios but to no avail.

Thanks in advanced
My Precious
(17 items)
 
  
CPUMotherboardGraphicsRAM
8350 Gigabyte 990fxa-ud3 Powercolor HD6950 2gb G.Skill sniper 2x4gb 1333 
Hard DriveOptical DriveCoolingOS
Seagate Barracuda 2TB LG DVD reader/writer Coolermaster hyper 212 evo Windows 7 Ultimate 64bit 
OSMonitorMonitorKeyboard
Ubuntu 12.10 Benq 20" lcd Compaq 16" crt Thermaltake Challenger  
PowerCaseMouseMouse Pad
Thermaltake toughtpower xt 875w Bitfenix Shinobi xl Thermaltake Azurus Thermaltake Conkor 
Audio
Logitech 5.1 
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My Precious
(17 items)
 
  
CPUMotherboardGraphicsRAM
8350 Gigabyte 990fxa-ud3 Powercolor HD6950 2gb G.Skill sniper 2x4gb 1333 
Hard DriveOptical DriveCoolingOS
Seagate Barracuda 2TB LG DVD reader/writer Coolermaster hyper 212 evo Windows 7 Ultimate 64bit 
OSMonitorMonitorKeyboard
Ubuntu 12.10 Benq 20" lcd Compaq 16" crt Thermaltake Challenger  
PowerCaseMouseMouse Pad
Thermaltake toughtpower xt 875w Bitfenix Shinobi xl Thermaltake Azurus Thermaltake Conkor 
Audio
Logitech 5.1 
  hide details  
Reply
post #2 of 4
Quickly overclocking your GPU shouldnt affect it in any real way - usually a quick reinstall of the drivers fixes most problems. Have you tried that? Have you missed changing back some other settings?

I know when i plugged in a 2nd 7970, windows would start flashing and i had to do an uninstall/reinstall for everything to get back to normal.
post #3 of 4
Thread Starter 
Thanks for the idea, before I tried that I drained my PC of power by unplugging the PSU and that did the trick
My Precious
(17 items)
 
  
CPUMotherboardGraphicsRAM
8350 Gigabyte 990fxa-ud3 Powercolor HD6950 2gb G.Skill sniper 2x4gb 1333 
Hard DriveOptical DriveCoolingOS
Seagate Barracuda 2TB LG DVD reader/writer Coolermaster hyper 212 evo Windows 7 Ultimate 64bit 
OSMonitorMonitorKeyboard
Ubuntu 12.10 Benq 20" lcd Compaq 16" crt Thermaltake Challenger  
PowerCaseMouseMouse Pad
Thermaltake toughtpower xt 875w Bitfenix Shinobi xl Thermaltake Azurus Thermaltake Conkor 
Audio
Logitech 5.1 
  hide details  
Reply
My Precious
(17 items)
 
  
CPUMotherboardGraphicsRAM
8350 Gigabyte 990fxa-ud3 Powercolor HD6950 2gb G.Skill sniper 2x4gb 1333 
Hard DriveOptical DriveCoolingOS
Seagate Barracuda 2TB LG DVD reader/writer Coolermaster hyper 212 evo Windows 7 Ultimate 64bit 
OSMonitorMonitorKeyboard
Ubuntu 12.10 Benq 20" lcd Compaq 16" crt Thermaltake Challenger  
PowerCaseMouseMouse Pad
Thermaltake toughtpower xt 875w Bitfenix Shinobi xl Thermaltake Azurus Thermaltake Conkor 
Audio
Logitech 5.1 
  hide details  
Reply
post #4 of 4
Oh weird...ill have to remember that - glad everythings working now
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