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ATI Radion HD 66770

Question asked by martymcfly on Jul 27, 2015

I have a ATI Radion HD 66770 Video card and a HP Envy 700-339 PC.  When I start the PC I get 6 beeps then windows loads but no video.  The card works in Windows but can't access the bios or recovery software on my usb flash drive.  Any help would be appreciated.