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Windows 7: Computer shut of and wont turn on.

10 Aug 2012   #11

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1

OK. Yours is a fairly new system and that is a good quality power supply, so now I am doubting my original diagnosis.

Do you get any response at all when you push the power button to turn on the computer? For instance, does it look like the fans are trying to start but then don't?

My System SpecsSystem Spec
10 Aug 2012   #12

Windows 7 64bit

Only the powersupply fan is working but the other 2 isent starting at all. Its like half of the computer is dead.
My System SpecsSystem Spec
10 Aug 2012   #13

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1

If you are up to it you could try this diagnostic routine below to try and determine what is causing the no-boot problem:

Please use proper anti-static precautions!

New System Failure Diagnostic

Basic diagnostic procedure is to uninstall the entire build and start over. Some people do this out of the case by placing the motherboard on an anti-static surface. This eliminates the possibility that there is a short circuit between the motherboard and the case through the connection posts (stand-offs). A standoff in the wrong location or a sloppy job will cause a short.

The Test (power off, power cord unplugged):
  • Disconnect everything externally connected except the mouse and keyboard (printers, USB devices, etc). If you are not using a wired mouse and keyboard see if you can borrow one. The wireless device is just another component you have to deal with.
  • Disconnect the power and data cables from all the drives inside the computer (Hard drives, DVD/CD drives, etc).
  • Remove all the cards installed in the expansion slots (PCI/PCI-e) including the video card. (Be careful handling them and place them on a non conductive surface while testing).
  • Remove all the RAM sticks (same rules as above).
Now connect the power cord and turn the PC on.
  • The motherboard should start beeping. You should get a beep code that tells you there is no memory. This is good, it means the processor is functioning and the motherboard is good so far.
  • Now add one stick of memory in Slot A1 and power on. More beeping: "no video card" beep code. This is good.
  • Then add the video card and connect it to the monitor. You should get no beeping and you should see the BIOS start screens, ending with the message that there is no boot device.
  • If you get no video then switch the one memory stick installed for another one and test.
  • If you do get video then start adding components back, one at a time, until the system fails to boot. The last component you added is then the problem component.
If you do not feel comfortable doing the above tests then I suggest bringing it to a repair shop.
My System SpecsSystem Spec

10 Aug 2012   #14

Windows 7 64bit

My dad just went by the repair shop and got som advice and fixed it! It was some dust that had come between some cables. But Thank you verry much for your support anyway!
My System SpecsSystem Spec
10 Aug 2012   #15

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1

Good to know you got it fixed.
Always a good idea to keep the insides clean.
My System SpecsSystem Spec

 Computer shut of and wont turn on.

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