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My PC model is Acer M1640, the PC won't start. Here are my tests:


  • The PC wont even BEEP
  • The power lights and fans work normally
  • The hard disk spins, and I can hear it working

Things I have tried doing:

  • Removing all drives
  • Testing all the RAM's (Removed one, tested one, and removed all)
  • Cleaning the CPU fan
  • Removing the graphics card
  • Tried a new battery and PSU disconnection

None of those worked. I have also tried seeing if any wires are loose.

Suggestions and fixes anyone?

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So you don't see any output whatsoever on the screen? And you've tried plugging the monitor right into the motherboard? – n0pe Jul 10 '11 at 20:13
Nope, nothing. No signal. – Asus Jul 10 '11 at 20:16
Can you confirm that the monitors work? If not this seems like there might have been a short circuit somewhere. Is this a new build? Have you added hardware? – n0pe Jul 10 '11 at 20:18
There was no new hardware added to it, The monitor works fine. I am using it at the moment with another PC. It's an Acer M1640. Acer built it. The mobo doesnt even beep. – Asus Jul 10 '11 at 20:20
There could be enough power to get the USB up and running, but bringing a whole system up requires a good deal more. I've been in situations where my fans would all light up and my drives would spin but my computer would get to the BIOS. It was a power supply issue. You could borrow a PSU from a friend and give it a try (make sure the powers either match up or the new one is more powerful). If not, you might benefit from spending 50$ and getting the computer tested at a computer shop. They would be able to tell you exactly what to do (assuming they're competent). – n0pe Jul 10 '11 at 20:35

This is a very old question but I'll answer anyway

This normally happens when the PSU's "PG" signal is no longer grounded, which normally means a faulty PSU.
A PSU tester can confirm whether that is the fact. If it is, then it's time for a PSU replacement.

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