Pc doesnot detect my new videocard

Why does my computer doesnt detect my new graphic card? (only my old onboard)
motherb: p5gc-mx/1333
gr card: xfx radeon hd 6870-zdfc
powersup: xfx pro 550w
os: windows 7
3 answers Last reply
More about doesnot detect videocard
  1. Did you plug in the PCIe power cable from the Power Supply into the 6870?
  2. I did, 1 6pcie and a splitter for 2molex to 1 6pcie.
  3. if the card is conected right to power try another card..oldr nvidia card. it may be a bios or chipset issue with your older mb.
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