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Radeon hd 6790 blackscreen

Last response: in Graphics & Displays
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September 14, 2011 4:58:46 PM

Hello,
i pluged a sapphire radeon 6790 into my pc *old gfx card broke by moving pc on voltage, it did a little move in the slot* now system boots. installed os 7 ultimate... al fine .. when i install the grafic driver the system reboots... all normal so far.. its booting to the start screen *loading windows7* then screen goes black and u only hear that he goes to desktop cos the start sound comes up.. numlock on and off still works so system isnt stuck.. power off button also shuts down windows normaly.. u hear logging out sound.. just no screen at all . any idea ?
September 14, 2011 5:53:12 PM

you can try unplugging the video cable and plugging it back in when it is black.
you can also try a different type of cable, say hdmi instead of DVI or whatever.
you can go into safemode uninstall the driver and then install an older version of the same driver.
you can try calling your computer really bad names and hope you convince it to work.
you can lastly RMA the card cuz it refuses to work.
September 14, 2011 5:56:14 PM

dont laugh

make sure your screen is set to pc
or whatever check the settings
go into your bios check the pci config maybee change some settings
16x 8x 4x u know what i mean
try a different pci slot maybee its burned
make sure your card gets the power it needs to run stable or run at all
if u dont got a 6 or 8 oder whatever pin connector on your card u should do this
change power management of your OS to balanced
go to : regedit/HKEY_LOCAL_MASCHINE/SYSTEM/ControlSet001/Class/{4D36E967-E325-11CE-BFC1-08002BE10318}/0001 and change Enable ULPS to 0
if it still doesnt work
update your driver again + ccc
flash the latest bio
still doesnt work?
try to get your money back
or take the card and throw it into a window of somebody u really hate

take care
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September 14, 2011 6:08:11 PM

mhhh motherboard only got one pcie slot :/  and its a old old old screen with only normal cable input

gonna try the older driver and the bios

tho why they offer a driver disc if its not working xD
September 14, 2011 6:12:50 PM

oh never use the driver disk unless its for network drivers.
always get a new one from the internet. prevents a lot of problems.
the driver they provided probably works with most computer configurations. just not yours.
September 14, 2011 6:15:21 PM

power cables set correctly power suply has enough power to run the whole thing to checked that *500w needed it got 570*
September 14, 2011 6:16:14 PM

also windows self driver update failed.... same problem
September 14, 2011 6:25:43 PM

did u try a different card in your pci slot?

btw u can roughly calculate your psu usage with this tool


September 14, 2011 6:27:46 PM

radeon hd 6790 sapphire vga card
amd phenom II quad cpu
gigabyte S-series nvidia mcp72-78 mainboard
kingston 2x 2gb ddr2
if that matters anyway
September 14, 2011 6:29:07 PM

sadly i dont got a chance to try it
i dont got another card and also know nobody who has
the guy form the pc shop said bring pc to me ofc
but that will result in a rat tail for sure... buy this n this n this ... :p 
September 14, 2011 6:30:50 PM

in another forum somebody said that a chip or something ON THE CARD wouldve burned out already so the gl and 3d support aint run propperly ... but wtf the card is brand new
September 14, 2011 6:36:34 PM

hmm i heard of many peeps having problems with ati cards and nvidia chipsets
but u should really try if the pci slot isnt burned out get a cheap whatever card
and if the pc shop guy wants to fix it bring it to him if he cant do it he needs to replace it
or take the card bring it to the shop and let him test it ...
September 14, 2011 6:43:39 PM

bios is latest version... would wonder if it wasnt... the board is kinda new to
i rather investigate the 30euro to let him test the whole engine then buying another 30 euro card else way the second card would be useless in the end no ? ^^
and if the radeon is fine , then i just bite my ass :p 
i think the pcie slot self got a hit
the mainboard is kinda new to
maybe the warantee safes me
ty for all ur atention
September 14, 2011 6:46:16 PM

yw mate

good luck
!