PC keeps rebooting

Hello everyone !
My PC keeps rebooting immediatly after i turn it on or after 5/10 minutes.
I tought it was my power supply so i bought a brand new one and i have the same problems.
Also i didnt overclock anything, and i checked my CPU and Video card coolers and they are properly mounted.
This started happening to me yesterday.

My PC:
Core2Duo E7200
Asus gt440 DDR5
3x1gb DDR2 667
Gybagite GA-P35-DS3L
Power supply: Segotep SG-500A(this is the new power supply i bought)

Could there be some short-circuits on the motherboard ? Or on the turn on/off switch in the PC case?
11 answers Last reply
More about rebooting
  1. First try it on safe-mode, see what happens. And that is not a good PSU you bought.
  2. Now it seems my monitor doesnt turn on when i start the PC and i don't hear the its all ok "BIP"" that happens before loading windows.
  3. Ive removed the Video Card and the PC didnt reboot, when i plugged it in again it entered in Windows on first try, now im looking at the pc waiting for it to see if it reboots... What could be the problem ?

    After 4 minutes its restarted again...
  4. Take out all RAM sticks and start the PC, if its beeping the MB is ok probably, else its gone.
  5. lonewolf7 said:
    First try it on safe-mode, see what happens. And that is not a good PSU you bought.


    I can't i tried once but i get on my monitor no signal detected...restarted again and the monitor doesnt even turn on...but just 5 minutes ago the video card worked again and so on...
  6. lonewolf7 said:
    Take out all RAM sticks and start the PC, if its beeping the MB is ok probably, else its gone.


    Yeap, the MB is beeping...so what could be the problem...?
  7. Try with only one stick of RAM, see if you can get the display. If one doesn't work try another and so on. And you could use the on-board video(VGA) on the back of the MB.
  8. lonewolf7 said:
    Try with only one stick of RAM, see if you can get the display. If one doesn't work try another and so on. And you could use the on-board video(VGA) on the back of the MB.


    Ok ive tried every ram one by one, same thing, but i managed to go in safe mode for 5 minutes until it restarted again...
    My videocard has 29-30C in idle so i dont think thats the problem.
  9. Just try it with your GPU removed. And check your HDD/SSD with : http://crystalmark.info/software/CrystalDiskInfo/index-e.html
  10. lonewolf7 said:
    Just try it with your GPU removed. And check your HDD/SSD with : http://crystalmark.info/software/CrystalDiskInfo/index-e.html



    I just removed the GPU and it started rebooting...same thing...Could my MB be failing ?
  11. Yes it could be. You can do two things : 1. Bread Board the system 2. Borrow another PSU from someone just to test.
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