My computer won't stay powered on

  o44wen 17:28 27 Jun 2010

Please help my computer won't stay on anymore! It loads til the desktop sometimes and then just dies. I don't understand, i've checked all cables and connections, pulled all out a replaced them all but still doesn't help.

Does anyone have any idea of what could be causing the problem?

She was using it ok on friday morning but when husband put it on friday night it didn't load fully :-(

  Fruit Bat /\0/\ 17:36 27 Jun 2010

Does it shut down with an error message and reboot or just it just die completely?

  o44wen 17:38 27 Jun 2010

The computer just dies completely. No error messages etc

  o44wen 17:38 27 Jun 2010

The computer just dies completely. No error messages etc

  onthelimit 17:40 27 Jun 2010

If it stops totally, sounds like it may be a PSU problem.

  o44wen 17:45 27 Jun 2010

The computer just dies completely. No error messages etc

  Fruit Bat /\0/\ 17:59 27 Jun 2010

Make model?
Operating system XP Vista W7?

  o44wen 18:00 27 Jun 2010

Dam thats not good if its the psu. It'll have to go to the shop for repairs.
Any other suggestions to try before we take it to the shop

  o44wen 18:07 27 Jun 2010

Few year old(4 or 5), Mesh but load inside stuff changed over the years.
Windows XP

  Fruit Bat /\0/\ 18:41 27 Jun 2010

Probably PSU as stated, easy repair to do yourself

If renewing a PSU check:

1. The physical size of your PSU, some are hard to replace due to being a non standard size.
2. The amount of power need from the PSU don't skimp.
3 The correct connections for your equipment

1. Physical Dimensions

Besides the specs and form factors, the physical dimensions are also important factors in selecting a compatible power supply. Here is an outline of the physical dimensions of most standard power supplies:

# ATX: 6x3.5x5.5", HxWxD. Most common. Uses 4 mounting screws.
# Mini-ATX: 5x3.5x5", HxWxD. Rare size. Uses 4 mounting screws. Can be used in a regular ATX case, but often not the other way around.
# MicroATX: 5x3x4", HxWxD. Use 3 mounting screws. Not interchangeable with ATX or miniATX.
# Flex ATX: Even smaller than Micro ATX. Various sizes according to case specs; often not interchangeable.

Use the data above to determine if a particular power supply would fit your case.

The quality of a power supply can be estimated by its weight. While this is not a true scientific or thorough measurement of the power supply reliability, it is nevertheless a very simple and easy way for ordinary PC users to estimate and compare the quality of a power supply. Why weight matters click here

2. Power supply calculator click here

3. Correct connections
Some boards have 20 pin connectors others 24 pin
There is often a 4 pin plug required to power Intel CPUs
Molex D plugs for IDE HDD and CD/DVD drives
SATA power connections for latest HDDs and DVD drives.

Guide to changing PSU
click here
click here

HP and compaq PSU problems guide
click here

guide above is worth looking at even s your machine is a Mesh

  woodchip 18:47 27 Jun 2010

Have you given it a good clean with a soft brush round the CPU fan as if it builds up, CPU will shut down to protect its self. Check that Heat exchanger fins are clear these are just under the Fan

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