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I just bought a Radeon HD 6770 graphics card. It is plugged into the only graphics card connector on my motherboard. I have it connected to the power supply (using a 6-pin red connector that says "PCI-E" on it, I think that's the right connector? Mine has a 6-pin and a separate 2-pin connector, but the gfx card only has one 6-pin connector).

I power on the computer, all the fans spin, but I get "No Signal" to the monitor; the monitor works on another PC. Am I connecting something wrong (maybe using the wrong 6-pin)? I literally JUST opened the graphics card box; it was brand new from TigerDirect. All of the below parts are around 2 months old or newer.

Specs:

  • Motherboard: ASUS M5A97 R2.0
  • GFX Card: Radeon HD 6770
  • RAM: 8GB (Corsair DDR3)
  • CPU: AMD Phenom II 965 Black Edition
  • Monitor: Acer P215H
  • PSU: Thermaltake TR2 700W

Any advice would be greatly appreciated as for the love of me I can't seem to get some simple upgrades working and I've been at it for 3 months now and spent close to $1000 on various parts that don't work. I've had to replace a power supply, a motherboard, and another graphics card because the pieces would not work together, and I have no idea why something seemingly so simple is causing me such grief.

EDIT: This "No Signal" issue has been going on for several months now with a variety of components. I replaced a power supply and motherboard and Sapphire Radeon HD 7850 that I was told were all bad/fried because the monitor never detected the graphics card. Now with a brand new out of the box card I'm still getting that same error so there must be something I am doing wrong (I highly doubt that two different PSUs and gfx cards could both be bad immediately). The only things I haven't swapped out and replaced are the DVD-RW, the hard drive and the case itself (it's a generic black iBuyPower case as the original PC was one of those), everything else has been replaced at least once and still I get this "No Signal" error.

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Nitpick detail: "It's plugged into the only graphics card connector on my motherboard." No it is not. Googling shows that the Asus M5A97 R2.0 has 4 PCIe connectors. These can be used for general purpose PCIe cards (including but not limited to graphics cards). Two are x1 (the small ones, two are x16, one coloured blue, one black). –  Hennes Apr 13 '13 at 21:12
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As to the 6/8 pin connector. These usually often come as a 6+2 set, where you can pry the extra 2 pins loose. (some cards use the 6 pin(s) connectors, some the 8 pins. So this is the easiest way for PSU manufacturers). –  Hennes Apr 13 '13 at 21:15
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spent close to $1000 on various parts that don't work Various AMD parts, it seems. There's a reason I buy Intel + NVIDIA. –  ta.speot.is Apr 13 '13 at 21:24
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1) Parts are often DOA. 2) "I have no idea why something seemingly so simple is causing me such grief": there's a reason people buy pre-assembled computers. 3) Have you tried the graphics card in another computer? –  Ƭᴇcʜιᴇ007 Apr 13 '13 at 21:38
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Also I understand parts are often DOA, but two components in a row? that seems a bit unlikely unless I have REALLY bad luck. –  Wayne M Apr 13 '13 at 21:45

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