Et1161-05 emachine-cmos battery number - eMachines ET1161-05 PC Desktop

It is probably best to remove the battery and look at it for the number.

cr2032 / just a plain old watch battery

THE MOST EASY WAY TO CLEAR CMOS JUST REMOVE CMOS-
BATTERY FOR 10-20 SECONDS.IT LOOK LIKE A WATCH-BATTERY.BE CAREFULE WITH THE HOOKS.

Open the case, it's on the motherboard, after replace boot to BIOS set clock. This is a guide: http://www.youtube.com/watch?v=ao866I9XpTo and http://emachinesmonitor.danielcadams.com/how-to-replace-a-cmos-battery/

Your CMOS battery may be dead. That is the watch style battery on your motherboard. Choose f2. If the problem persists, change the battery

The cmos battery is located on the motherboard, and is easy to see,
its a big flat watch battery.

Look around on the motherboard for it, and there is a little clip somewhere around it that you need to push back to release the battery.

You should touch and hold the frame of the computer with one hand while you remove the battery, if you don't have a anti-static strap.

Hi,

most cmos batterys go + side Up.

Mike @ compurepair.

Did you remove the CMOS battery and move the jumper on the systemboard to clear the CMOS? After a few minutes or so, put the jumper back and power on the machine. If it powers on fine, you can turn it off and put the CMOS battery back in.

Link to your users guide:
http://support.gateway.com/emachines/Mobile/2008/eMachines/eMD620/emd620ul.shtml

There may be many causes.

First, if you get any Beeps, recommend you to remove and reinsert the Memory(RAM) sticks.

Do try booting after removing the CMOS Battery(The one like a coin on the motherboard). Check the manual for instructions to remove the CMOS Battery.