System won't POST after installing Radeon HD 6990

By munny
May 15, 2011
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  1. Hi Guys!

    I've had good luck here in the past so Im hoping to get some help again. Here's myy story:

    I recently bought an XFX Radeon 6990 from Provantage, got the card and installed it in my system, and No dice. I get Fans powering up on it but does not go to post screen. I Feel like I have it fully seated in the PCI slot, both 8pin power connecters are attached I just can't figure it out. I RMA'd the card to XFX and they came back telling me it fully tested ok for them. Now as I wait for it in the mail to return to me Im trying to diagnose what may keep it from working for me.

    Like I said I feel like it was fully seated.
    Both power connecters are attached.
    I tried booting with out any usbs plugged up
    the system boots just fine with my gfx cards that i am replaceing (2 x 9800gt's )
    system boots just fine with a single 9800 gt

    rest of system components are -
    AMD phenom 9950
    Asus M3N72-D mobo just updated to latest bios
    tagen 1100w Power supply
    8 gigs of ram (4 x 2gig sticks)
    single HD
    single dvd rom
    Windows vista 64 bit

    any thoughts greatly appreciated!
  2. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    Have the XFX Radeon 6990 replaced under warranty
  3. munny

    munny TS Rookie Topic Starter

    I upgraded my board to an intel board with a core i5, and ddr3 ram. and card runs fine. Not sure what system component it didn't like before, but i lead towards the MOBO although it certainly was on AMDs approved list...

    Thread solved
  4. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    Okay, thanks for the update :)

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