Sudden shutdown of laptop

[hilary przystupa]

Hello,
my acer 7520 laptop shut down suddenly last week with a bluescreen and a line of figures and letters, yesterday it shut down once suddenly switching itself off and tonight just keeps shutting down after about three minutes, this is the longest its stayed on whilst I discovered this site and typed this mail

 

[phil22]

Test the hard drive to start with, and if it passes the test you can move on to trying other things.

Download your drive maker's diagnostic software for DOS via the appropriate link here: http://www.tacktech.com/display.cfm?ttid=287

The download is an ISO file from which you can create a CD using IMGBurn on a working computer:
http://www.filehippo.com/download_imgburn/

Boot your laptop from that CD and the testing software will open. Test the laptop's hard drive using the "Long" or "Extended" test, with the laptop connected to mains power via the a/c adapter.