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PC powers on but won't boot

This is a discussion on PC powers on but won't boot within the Windows XP Support forums, part of the Tech Support Forum category. I recently discovered that my PC, which runs Windows XP, is no longer booting properly. When I switch it on

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Old 04-07-2015, 05:41 AM   #1
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OS: Windows XP

I recently discovered that my PC, which runs Windows XP, is no longer booting properly.

When I switch it on the fans of the power supply, motherboard and rear of the case all run but no vision is sent to the monitor and no lights are present on the motherboard or at the rear ethernet port. The usual single beep from the motherboard is no longer present and the internal hard drives don't sound like they're doing anything. The power and reset buttons on the front of the case are now no longer able to turn the PC off.

I've checked the internal connections for any loose ones but haven't had any success. I also tried removing the memory chips from the motherboard one at a time and then both at once as a way to check if the motherboard or memory is at fault. The PC had the same response with each of the memory chips running on their own and there was no error beep made by the motherboard when the computer was booted without any memory attached.

From what I can tell I might be in need of a new motherboard. But any advice would be appreciated!
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Old 04-07-2015, 05:53 AM   #2
Join Date: Apr 2007
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if you remove the RAM and try and boot you should hear a series of beeps to say there is no RAM installed. If you do not then that would indicate the motherboard is knackered.

Also beaware that just because lights come on it doesn't mean the power supply is ok. Try another one if you can.
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Old 04-07-2015, 02:09 PM   #3
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Remove all hardware from the motherboard (eg) Hard Drive, CD/DVD drive, any external cards, Remove all but one stick of RAM. Try to boot the computer into Setup (Bios) if that works add one piece of hardware at a time until the computer fails, then you will know what is the problematic hardware. If booting with one stick does not work, as greenbrucelee suggested, boot with No RAM, if the computer doesn't beep continuously, then it is shorted out. Your next step would be to try a different Power Supply Unit.
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