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What could I have messed up?

Hi all,

I gave installing a brand new EVGA GeForce GTX 480 in my system tonight. Things didn't go so well... got everything hooked up and ready to go, hit the power button and the machine started booting for approximately 3 seconds, then cut off, then powered on again.

I double checked all my wiring to make sure I didn't plug in anything incorrectly, and it looks good. Decided to just take the video card out and boot like that... same symptoms. Uh oh.

Gradually disconnected everything from power save for just the mobo/cpu/ram... same behavior. What could I have messed up?

Thanks in advance - I can provide additional details as you folks deem relevent.
7 answers Last reply Best Answer
More about what messed
  1. Best answer
    Try clearing your cmos, see your owners manual, and see if it will boot up again.

    Also please list your system or if its a pre-built then let us know the make and whole model number. For example: acer aspire would not be very helpful whereas acer aspire 5532 would allow us to find exactly whats inside.
  2. Its a custom built machine.

    Asus P5Q mobo
    Core 2 Duo E8500 cpu
    2x2G OCZ DDR2 800 / 2x2G G.Skill DDR2 800 ram
    OCZ Game X Stream 700W PSU

    No overclocking/custom settings in the BOIS. System's been running fine for 4 years, very stable, no odd behavior until this.
  3. Resetting the CMOS seems to have worked with the components listed above. I will try reattaching the rest of my system (HDD/GFX/etc) and report back.
  4. And it was just as simple as that. Thanks potapim. Saved my weekend :D
  5. Best answer selected by Foddz.
  6. Nice when its some easy fix. Gives you a good scare at first though. LOL
  7. This topic has been closed by Mousemonkey
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