Tim's Tech Tips

The following is an e-mail exchange.
Request:

I have a Dell Inspiron 1525 and it powers off at random times during the day, no warning, the computer goes from on to off.
I believe it is a software problem given that after installing certain programs the problem gets worse. I spoke with Dell help on the phone and they told me to update my BIOS which did help for a while but now the problem is back and my warranty has expired so Dell tells me I have to pay for help.
I'm not sure you will know exactly what is wrong but any help is greatly appreciated

Click "Read more" to see my response.

Response:

If the Inspiron 1525 is a laptop (I think it is) then I believe the problem is most likely an overheating issue.
There are two things you can do to diagnose this issue, one of which may well fix it.
1: De-dustify the whole thing. You'll need 1 can of air, and 1 screwdriver (Phillips). The instructions for taking the cooling module apart are here: http://support.dell.com/support/edocs/systems/ins1525/en/SM/cpucool.htm#wp1179839
Follow the instructions carefully, make sure it's un-plugged, and make sure you're "grounded". Use the can of air to clear out any dust from the cooling assembly. If there is little or none there, then the dust probably wasn't your problem, but overheating still probably is.
2: Find the vent for your system's motherboard/processor (probably on the left side of the computer) and point a fan into it, fairly close to it so it's blowing inside the vent. While this isn't a permanent solution, if it works then at least you've diagnosed the problem. Run the computer for quite a while, actively – Make sure you’re taxing the processor pretty hard, but nothing extreme. If it still powers off, it might be something else. If it doesn’t power off, you know it’s an over-heating issue.
This is a common issue with laptops. You're not alone. My HP had the same problem. I've since switched to a desktop
For further diagnosis:
You said the laptop "powers off", so I assume you mean it just shuts off, and kills the power - is this the case? If it shuts down in sequence, as in it goes through the proper Windows shut-down procedure, then this may be caused by something else, such as a power issue. If this is the case, please get back to me so i can give you more information, and update the site.