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Resetting the CMOS

I've got an acer aspire 3100 and I need to reset the CMOS but can't find it. Any ideas?

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On boot up press one of these keys
F1, F2, CTRL +ESC, DEL or on the bottom of screen will be word saying to enter BIOS press?? key
one of these should do the job

Posted on Aug 31, 2008

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Cmos 5253 acer aspire

Press F2 (during POST) to enter the BIOS utility. Or if you want to clear the cmos, just remove the removable coin shaped battery for some ten minutes to do the same effect as "clear cmos jumper".

Feb 24, 2014 | Computers & Internet

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Need to reinstall acer arcade but don't have an installation disk

reset it to factory settings you should have that built in i have...go to all programs and look for acer then when you have that click on it and it says restore to factory settings do that and you should have the game back :)

Dec 31, 2011 | Acer Aspire 3100, 5100 AMD Laptop...

1 Answer

Can you remove cmos from acer aspire 7520

Cmos is located in BIOS

CMOS is an on-board semiconductor chip powered by a CMOS battery inside computers that stores information such as the system time and date and the system hardware settings for your computer..

if you remove the cmos your computer might/will not run

if you have changed or need to reset your cmos

During the boot process you will see on the screen to press a certain key to enter setup Press and hold that key during the boot up process to enter BIOS
using the arrow keys you can load failsafe or optimised defaults
after you make any changes in BIOS press Esc then press the F10 button save to cmos to restart

hope this helps you

Oct 30, 2011 | Acer (ACERMOTHERBOARD)

1 Answer

Would like to know how to locate cmos battery in acer aspire ms2283, cannot seeem to find it.

Well in most acer aspire are below the keyboard and unfortunately the battery is soldered on the motherboard.. want to reset it.? well be careful my friend..

Aug 05, 2011 | Acer Computers & Internet

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Forgot my bios password for acer aspire t160

I've heard that if you take out the CMOS battery and leave it for 24 hours it'll reset to its factory defaults

Jul 25, 2011 | Computers & Internet

1 Answer

Where is cmos reset jumper? Is it near battery,


page 77

label CLR CMOS 3 pin type 1-2 clear 2-3 normal

May 16, 2010 | Acer Computers & Internet

1 Answer

Will removing the CMOS battery clear the BIOS

it's about the processor level caches
but also might be a bad memory slot (RAM)

resetting the bios is a good choice, maybe this will helpe either

Jul 01, 2009 | Acer Computers & Internet

1 Answer

I have a problem with my Acer Aspire 3100 Laptop. The problem is when I turnon the Laptop it comes on with a statement telling me to Press F1 to start normal or F2 to start setup. But when I press one...

what does it say besides the f1 and f2...there is soemthing stopping the computer from booting and it should say something like...cmos reset or the date and time are not set or keyboard error or something to that effect. try dusting out the laptop with a low psi air compressor or can of air and see if that helps..

Apr 26, 2009 | Acer (ACERMOTHERBOARD)

2 Answers

Bios reset

As another option you could try resetting the jumper. Some boards save the password regardless unless the reset the BIOS by using the resetting jumper. Refer to the motherboard's manual for further information on how to do this.

Oct 10, 2006 | Acer (ACERMOTHERBOARD)

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