New Graphics Card No Signal

Hey, I recently bought an XFX HD 6870 (upgrading from a 9800 GX2) and the computer boots fans are all on but once it gets past the bios the monitor looses signal. I also upgraded windows vista to windows 7 and can not enter into safe mode because the screen goes blank. If i put my old graphics card in the card works perfectly. I have reseted the cmos and sent the card back to the suppliers finding no faults in the card.

PC Spec
evga 790i ultra sli
intel q6600 2.4ghz quad core
6gb ram
800W psu
2 answers Last reply
More about graphics card signal
  1. did you remove the old drivers then install new card and install new drivers
  2. thank you for the reply, i did a clean install of windows 7 even so i did remove the windows old file and with the old graphics card went into safe mode and used driver cleaner pro but it still happens.
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