New build keeps rebooting


Just built a new system with the following:

Motherboard - Gigabyte Z68XP-UD3
Processor - Intel Core i5-2500K LGA 1155
Memory - Corsair Vengeance 8GB

When I boot it up it almost instantly reboots. I can get into the bios but as soon as it passes the bios in startup it reboots.

Any suggestions on what to try next?


15 answers Last reply Best Answer
More about build rebooting
  1. You didn't list any hard drive.. was that intentional? If not, then there's your problem lol.
  2. Good point wintermint! This is my hard drive:

    Barracuda 7200.10 SATA 3.0Gb/s 500-GB Hard Drive

    Power Supply:

    Thermaltake TR2 600W


  3. Did your OC you CPU?

    as to wintermint. You can boot up your PC without a hard drive.
  4. No OC, everything is running default.
  5. When you say new build? Do you mean everything is brand new? or did u switch out parts?
  6. The only thing that is not brand new is the hard drive. The only connections I have to the motherboard is the hard drive, cpu fan, front panel header (pw, speaker,hd, res), 2x12 main power connector and 2x2 power connectors.
  7. Well if you can go into your BIOS it has nothing to do with your connections, do you have a spare HD drive?
  8. No spare HD. I suppose my next step would be to purchase one?
  9. Maybe, Because how i see it. The rest of your hardware is fine. Maybe you might get more suggestions from others.
  10. Because your running the same Cpu and mobo. One other thing i might suggest is if you have a spare system(assuming that you still have your previous Rig) to test you HDD on, i'd do that before buying another.
  11. The HDD worked when I took it out of my old system. Hopefully, it didn't get fried when I migrated it over. Thanks for your help. I'll look into the HDD being bad.
  12. Ahha, I know what you mean. I fried my mobo dusting it out with an air can.
    Computer parts, tend to break when you least expect it
  13. Best answer
    Your new system has the same Motherboard & CPU as your old system? If not, then what is probably happening is the old HDD still has the drivers for the old motherboard & that is conflicting with the new one. The only way out of this is to do a clean install of windows.
  14. Best answer selected by mousel.
  15. I added a new HDD to the system and it works. Thanks guys for all your help!

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