Turn off by itself

I also have same problem I thought it was the battery but battery is ok I realised it was the fan not working it was overheating and shutting down i left it to cool then it came back on. Check the fan whilst on.

Sounds as if charger is failing to charge battery or battery has lost it's memory, especially if its a good few years old.

To "reset" your battery charging capacity, put it in a plastic bag and keep it for at least an hour in your fridge...
Freezing temp will reset the battery, making it capable of charging almost back to normal.
(works also for cellphone batteries ets)

1)remove battery and unplug from mains
2)press power on few times
3)replug battery only
4)press power on few times
5)replug to the mains
6)press power again ... then it should run few weeks or months till it reoccurs

it is static in the battery.

with the computer turned off.

hold down the power button for approx 40-50 seconds.

Take out battery.

Plug in ac adapter, and turn on computer. Then replace battery.

Basically this has drained the battery and removed any static energy, and it takes approx 1 hour to recharge.

Problem solved in 99%.

OK guys, my girlfriends Acer had the same problem. If it randomly shutting off its likely that one of 3 problems are occuring.

1. mis-seated ram. It is quite common. open the back panel of the Acer (oain in the arse) and reseat your ram (only if you know how.)

2. The fans plug isnt plugged in correctly. Open the back panel and unplug then re-plug in the fan.

3. There is a silver heat restriction plate in the center of the machine when you take the back off. Loosen it SLIGHTLY and try to reboot it and see if that works.

I did all three of these and all seems to be going well.

This is a heat issue. This notebook automatically powers off when the cpu reaches a certain temperature to prevent damage.

Let me guess.. were both fans running full speed when it happened? They are probably clogged with dust.

Mine was doing this as well.
It proved to be dust on the cooking fins. A shot of compressed air thru the vents is all it took.

Problem sounds more like the cooling fan is not operating...?

IF THE NOTEBOOK WORKS WITH ONLY THE CHARGER PLUGGED IN THE CHARGER IS FINE , I HAVE GOT THE SAME PROBLEM , WRAPPED THE BATTERY IN A PLASTIC BAG AND LEFT IN FREEZER FOR A COUPLE OF DAYS , CHARGED IT AND SEEMS TO BE FINE

charger jack could be broken it happen's to a lot of these laptops we bought 2 at the same time about a year and half ago they are both broken now was told these boards have a problem with the charger jack you can pick it up on e-bay but then you must remove the old one and solder in the new.

not the charger i tried that. Not the battery i tried that. I have the same problem. Good luck and let me know if you find out what it is.

This sounds like a overheating problem and the fan may have gone out.

have you tried the battery recondition program that is on the computer?

Tyogi,

I am having the same problem you are having. I have run some M/B CPU temp monitoring programs and they are reporting the laptop is overheating. Programs used for monitoring can be found here:

Good spec readouts of laptop:
Everest v. 2.20 - http://www.majorgeeks.com/download4181.h...

Used to Monitor components such as M/B, CPU and HDD temps:
Hmonitor - http://www.hmonitor.com/

I have had this laptop for about 1 yr and 7 months. How long have you had yours?

I have been able to catch it while it's shutting down and have seen a message stating the CPU reached 82 degrees. I
researched the CPU specs and the min/max thermal read shoud be between 5 ans 75. The ideal Thermal Design Power for the CPU on this laptop is 68.5 degrees Celsius.

http://download.intel.com/design/mobile/...

I am in the process of backing up my data to send this baby in for repairs since I boght an extended warranty.

Try running the Hmonitor.exe and see if the overheating alarm goes off.