could be a virus or your hard drive packing in.
I think.

if it will stay on long enough try doing a virus scan

My computer did that too. (I bought another one)I haven't as yet found out exactly what it was, but somebody told me it could have something to do with the fan. It mught be very dusty inside and clogging things up.

http://www.howtomendit.com/answers.php?id=26300

Alternatively it could be a problem with your cooling fan and then your chip overheating?

What you'd need to do is open up the box and have a look in side - there should be a taller stack with a fan on the top. If it's really dusty you need to give it a good clean (an airduster is fab for this) and then it should run a bit better.

oh yeah if the fan is dusty at the back and getting hot the comp will turn off so it doesnt over heat.

If you actually type "My computer keeps turning.... etc" into google. You will get a vast range of stuff.

Overheating in the hot weather. Leave it for an hour so it cool down and also clean the fans if possible.

If it is clicking the hard drive is going, if it is whirring there is a fan going and the computer is overheating is the general rule. Get the fan replaced before you fry the thing. Fans are inexpensive, usually.

kick it

Sounds like its over heating.

If it's a laptop, mine was doing the same and l was told to get some compressed air, to blast out the dirt and dust.
If a desktop, and you stand the tower on the floor, l bet it's clogged with dust. My mother had her's cleaned and it was chock a block full.

Thanks for all your replies, i never thought of the fan going, how lucky am i to have such a great load of brains on here!!

peg x

quote:

Originally posted by peggytyson:
Hi all! I need help from all you experts out there! My computer keeps turning itself off. It makes a strange whining noise then off it goes. Any ideas?

Many thanks, peg x

Sounds as if your fan and/or motor might be preparing to snuff it.