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Computer turns off, then immidiately shuts off, please help.

I got a Thermaltake 700W PSU, P8Z77-V LK, Radeon 7850 2GB, 1 8 GB DDR3 1600MHZ RAM stick. I have a PCI USB 2.0 expansion card and a PCI USB 3.0 Expansion slot. This is all in a Sentey Burton ATX Full Tower case. This has like 5 extra fans with it. Note: ALL PARTS ARE BRAND NEW.

Everytime I hit the power button, it turns on, all lights flash, and everything turns off immediately. We tested the power supply with a paper clip, and the fan turns. Do you guys have any ideas?
17 answers Last reply Best Answer
More about computer turns immidiately shuts
  1. The motherboard is shorting out against the case or grounded some where.
  2. Motherboard is elevated, with screws under it. Soo.
  3. Is the cpu overheating? Plug in a speaker any beeps or sounds?
  4. Yeah we have a speaker plugged into the motherboard, not a single beep. Turns off for like a second, then instantly off, I feel like it's PSU problem. That's what a lot of people seem to have.
  5. And yes the RAM stick is fastened properly. We took out the graphics card, optical drives, and the hard drives, just to run it barebones, still didnt' work. SO I"m pretty sure it's power supply.
  6. I agree, most likely.
  7. yea sounds like a PSU issue, either RMA it or go take it for exchange wher eyou go it, is my best answer for you
  8. Yeah we're thinking about getting a 1000W power supply. Let's just say hypothentically that it's not the power supplly, I hope not, then what could it be?
  9. motherboard. Hypothetically
  10. I was looking at some older threads, someone said what if you forgot to plug in power for your CPU, I only have cord for power for the CPU fan, I don't see one for the CPU, also what about like the RAM stick, do they need some sort of power cord too?
  11. LiquidAurum said:
    Yeah we have a speaker plugged into the motherboard, not a single beep. Turns off for like a second, then instantly off, I feel like it's PSU problem. That's what a lot of people seem to have.


    Not a single beep can't be good. Should get one quick beep from the mobo speaker. Plug in the CPU, CPU cooler, RAM, and GPU. Then attach all the PSU cable. Once you turn it on with a paper clip after a second or 2 you should hear a single beep.
  12. Yeah, my power supply only comes with 24 pin, and 4 pin connectors, and on the mobo it only has 24 PIN connectors which I'm pretty sure is for the motherboard, I don't think my PSU comes with an 8 pin connector, that's probably the problem
  13. If I plug in the 4 pin will it still work in the 8 pin slot, that's what the manual is making it sound like
  14. Best answer
    LiquidAurum said:
    Yeah, my power supply only comes with 24 pin, and 4 pin connectors, and on the mobo it only has 24 PIN connectors which I'm pretty sure is for the motherboard, I don't think my PSU comes with an 8 pin connector, that's probably the problem

    Oh, Yeah that could be it. normally you have 2 cords going from the PSU to the Mobo alone.
  15. IT'S DONE!!!! Turned out it was the CPU that wasn't plugged in. THANKS SOOO MUCH FOR ALL YOUR HELP :)
  16. Oh, cool. Glad you got it working : ) No problem

    Have fun!
  17. Good stuff! cheers
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