|......keeps long..... what ?|
Do you mean Compaq nx8220 ?
If it's a HP or Compaq computer.....
Scroll down a bit.
Look for the similar label on the outside of your computer.
Quote the specific model number - that's at the end of the first line.
Quote the Product number - that's on the third line.
Is it shutting off and staying off,
or shutting off then restarting automatically ?
The more description of your problem we get from you, the sooner we may be able to help you solve your problem !