Computer not working

  pinballmad 01:19 13 Sep 2010
Locked

when switch on the fan come on but no keyboard or blue light then I give it a copple a day and then it come back on and I need to know what is casueing this to happen. Packard Bell

  gengiscant 09:31 13 Sep 2010

Please get yourself a spellchecker and then re-post your problem with a few more details.

What operating system?
Do you get a POST beep after powering your PC?
Do you get any beeps?
If so,how many are the long or short of a mixture of both?

  Fruit Bat /\0/\ 10:14 13 Sep 2010

Sounds as if the PSU is failing.

If it goes completely it may take motherboard and hard drives with it.

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

  kjrider 12:53 13 Sep 2010

My friends Alienware PC was not working, so I got out the PSU to test on mine.

Now my PC MB has been killed off!

KJR

  lotvic 13:16 13 Sep 2010

kjrider, how very unfortunate for you, and expensive to put right ;-)

  lotvic 13:17 13 Sep 2010

It might just be the cables have come loose.
When your computer is switced off check that they are all fully plugged into your pc then switch it on again.

I had the same type of problem when some of my cables were not fully into their sockets.


Please post the details of pc as per gengiscant has requested.

  lotvic 13:21 13 Sep 2010

switced = switched

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