Sudden power shutdown - Dell laptop

Recently my Dell Vostro 2510 has a mind of its own and shuts down without warning. I am talking instant black screen, sometimes when it has only been on for a short time. I know it sounds like a hi-temp safety relay, but temps are generally looking okay. I am running Windows 7 Home Premium, 4GB of RAM.

In
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Trekman typed on Mon, 10 Jan 2011 04:05:04 -0800 (PST):
Recently my Dell Vostro 2510 has a mind of its own and shuts down
without warning. I am talking instant black screen, sometimes when it
has only been on for a short time. I know it sounds like a hi-temp
safety relay, but temps are generally looking okay. I am running
Windows 7 Home Premium, 4GB of RAM.

If you are running without a battery but on AC, try to see what happens
with the battery installed on AC too. If the battery was installed, try
without it to see if it happens then. There are lots of other things to
check and do, but this is what I would try first.

--
Bill
Gateway M465e ('06 era) - Centrino Duo 1.83G - 2GB - Windows XP SP3