Acer laptop 7520 shuts itself down after few seconds

[balikhan]

Hi,

my acer laptop 7520 shuts itself down after booting for few seconds.
It has Vista but dont think its a software / virus issue. As I got into BIOS / booting menu, it did not stay there. it shuts itself down.

I removed CD rom from laptop but had same result. It has two 1GB rams, I removed them one at a time but had same result. I then removed Harddisk and tried to make it boot from USB, but had same result. It was shutting down after 10 - 30 seconds. I see the Fan running when ever I start the laptop. Fan is very clean. no dust, dont think its a heating problem then.

please can some one advise what could be issue.
thanks.

I ran it on full battery but had same result. Then I removed battery and connected the power cable into laptop, same result. it shuts down after few seconds.

 

[Cobalt006]

Sounds as though its over heating. You might try taking a can of air and blowing the vents out. If this has not helped. You may need to take it to a repair shop. and have the thermal pads replaced.