!!! TOSHIBA SHUT DOWN !!!!!!!

deano,

Read this thread and try the same things I mention to see if you are haveing overheating issues. You might need to backup and send in for repair.

http://www.fixya.com/support/t121493-tur...

My Mom's Toshiba Satellite had a similar issue, started running hot, got a laptop cooler, that worked for a while. Then it started to shut-down without warning. I thought it might be a bad power supply/defective battery. Did a search, found a user group that filed a class-action lawsuit about this issue. Turns out many of those laptops have a design flaw. There is a gap between the CPU heat sink and the intake fan. Apparently the gap gets clogged with dust, animal fur, lint, etc. I removed the bottom cover & discovered the gap full of lint & cat fur. I gently peeled the strip of lint out with a dry cotton swab (wore anti-static wristband while inside of laptop), then blew out the inside of the laptop with canned air. From there I tacked fine nylon window screening inside the bottom cover over the fan vents (very sparingly with Krazy Glue). After the glue dried I replaced the bottom cover, Mom hasn't had any overheating issues since.

I have a toshiba laptop which was unexpectedly switching off. The laptop was 2 years old. I did lots of searching online to discover this is a VERY COMMON ISSUE.

The problem is, dust blocks the heatsink. When I took my computer to pieces, I found a strip of dust half an inch (1cm) thick covering the back of the heatsink which prevented air flow. If your laptop is a couple of years old, this could be the problem. When I removed this dust, the problem disappeared.

If you are computer savvy, then try the following - if not, take it down to a computer shop!

1) Remove the 5 screws holding down the heat sink cover and processor cover. These are on the bottom of the laptop, in the centre, at the back.

2) Remove the 3 screws which hold in the heat sink in place.

3) Remove the heatsink

4) Take the dust out

5) Re-assemble

a note: be careful not to get dust in the thermal paste on the cpu - unless you have replacement paste.

Good Luck!

I suggest you need to clean your system plus the dust is covering the air existing from CPU fan. This will solve 90% of the problem you have

If ventilating helps, check that the vents on the bottom and where the fan blows out warn air are'nt blocked, try gently hoovering around area witha nozzle.