I have a 15-month-old Aspire and it shuts itself down after 2-3 minutes from being turned on, no matter what.
Prior to this, it worked normally until one night I turned it off but it refused to power down. The screen was off but the fan kept going crazy and made a loud noise, and the computer didn't react to anything. I had to hold down the power button for it to shut down. The problems started after this.
Not only does it shut itself down constantly, but when booting I get random BIOS errors, such as: "Error sending end of post message to ME"
I can't update bios, for example, because the computer shuts down so quickly I can barely get to see the desktop.
The laptop was faulty when I bought it (brand new). It kept lagging all the time and I actually sent it to Acer TWICE. They replaced the motherboard, re-installed Windows and ran some tests on it. Warranty expired 3 months ago and now the whole laptop is useless.
Is there something I can do? I've now taken apart and reassembled the whole laptop since warranty's void anyhow. Nothing seemed to be off, there's no dust etc.
Or prop it up a bit and place a fan behind it so air is blowing on the bottom. This does sound like a thermal failure from not enough cooling. "fan kept going crazy and made a loud noise" does sound like a fan death.
If you can get it to stay running you might find a program called SPEEDFAN and see what kind of temperatures it is seeing.