computer shutdown ?

it did me !!!!!!!

was the RAM.

in your case may be ram memory, super-heating of the processor or source of energy with defect.

I have a great suggestion ..... tries this blog, I found the solution for my problem there.

http://howmakeyourself.blogspot.com/2008/05/how-do...

look for more information on the blog.

I hope help you.

After you rule out hardware issues (Processor overheat, power supply) KNOW THIS

Regardless of what other people say, there are Malware programs out there that wil hide on your hard drive (and some can attack the BIOS) even if you format and reinstall windows they will return to do the same thing over and over.

There is only one way in the entire United States (short of replacing your hard drive or PC) and I have just patented it, to remove this. I appologise that I can not say more but you at least know that what you have is an infection and there is no product made that will remove it permanently. We have a special processs that can remove it but all data is lost in the process. Sorry for you and your PC and hopfully soon there will be one of our franchises in your area.

Probable power supply fault this unit supplies all low voltage to motherboard hard drives c.d.etc at 12 & 5 volts not expensive to replace everything plugs in unit is held inside case with 4 bolts but some experience required to change this. Had the same problem some time ago, changed unit and no more problems

You've done the first thing I would recommend. Clean the system and see if there's a heat problem. You may wish to check the CPU fan to make sure it's turning freely and check the heat sink to make sure it's still firmly installed on top of the CPU.

What I would begin to suspect is that your power supply is going bad. Unless you have a power supply tester, the only way to check is to swap it with another (known working) power supply.

At any rate, either a heat or power problem is what I suspect.

It might need a new power supply unit that could be a possibility, check the connections to the motherboard. It could also be a fried motherboard and that would mean you need to replace it and the OS. But wouldn't consider it until after checking the Power Supply Unit, I would also check on the PSU that the 12v yellow cable is not being pinched anywhere.

Anymore questions contact me

Have a nice day.

Ken

I agree with Ripcord on this one. This is generally a sign of a bad power supply. I would check this first. In the world of computer hardware, power supplies go bad rather frequently. They're farily inexpensive and can be purchased at most computer stores. The power supply is the large box (usually at the top of your computer) that your power cord plugs into. They're easy to replace. I personally know of serveral occasions where this was the case, and that was what was wrong.

The capacitors on your motherboard are 'dying'. They're slowly leaking out their electrolytic paste. With the computer un-plugged from it's AC source, open it up. Take a flashlight, and see if you see this:

http://www.youtube.com/watch?v=oDGjWOabJ2E

also this:

http://www.youtube.com/watch?v=KN6_-8fYHo0&feature...

If your power supply had capacitors going out, it MAY cause this. (SAFETY-Don't open the power supply. The electrolytic capacitors inside deal with higher voltage. Either 120volts, or 220 volts. Depends on what country you're in. The ones on the motherboard deal with 3.3volts, 5volts, and 12volts. Capacitors inside the power supply hold a charge for a long time. Weeks to months. You open it, and put your fingers in there, your fingers could cause a circuit for the capacitor/s to discharge. Nasty shock to death could result! Motherboard? No Prob! Touch it all you want! Do De-static yourself first! Just touch the metal frame of the computer case, before you reach inside.)

Capacitors inside the power supply failing, are the usual culprit for a bad power supply. Makes a weak, or 'dropped' voltage rail. In theory, I suppose, a weak capacitor could lose it's voltage tolerance setting, then charge back up causing the power supply to put out the required voltage. If the last thing was to push the power button on, the soft power on setting could have been saved. Highly unlikely. This is one of the things 5volts is for.

Edit: Hey Cypher, send that virus bug over to me! Let's see what it'll do on my UBUNTU LINUX SYSTEM!! lol! lol! lol!

maybe you have a virus. you should try this. click on start menu then click RUN, after that type MSCONFIG in the box hit ENTER. now click startup. here your gonna see a list of programs that start at on start up. most viruses need to start up at the same time as your computerso you should click the UNSELECT ALL button. then hit apply. it will ask you if you should choose to restart your computer. Theres no need but you can if you feel you want to. if you have the time go to google and search all the different name abbreveations in that list. this way youll see wich one the virus is then you can get rid of it by dragging the file into your virus vault(i use avg and by default its a hidden folder labeled vault on my d:/ drive) i hope this helps.

i agree sounds like processor overheating or power supply. You can test the overheating issue by downloading a cpu burn program like hot potato or toast

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could be two things.

1) bad power supply

2) processor overheating