I need to replace the cmos battery on my acer aspire 5630,

Disconnect the power cord from the laptop and remove the main battery.
Open the laptop computer's screen and extend it as far back as it will go. Be careful not to stress the screen and cause any damage, but press it hard if needed.

1. Press a flat head screwdriver under the front of the plastic bar lining the back of the laptop's keyboard. Pry the bar up slightly and hold it with one hand.
2. 
   Pry up the other side of the bar with the flat head screwdriver and fully pull out the bar. Keep its ribbon cord connected and set the bar on the laptop's screen.
   
3. 
   Remove the two Phillips screws securing the computer's keyboard. Slide the keyboard up and out to remove it. Again, do not remove its ribbon cord, and set the keyboard over the laptop's touch pad.
   
4. 
   Remove the four screws securing the cover plate over the motherboard and remove the plate as well.
   
5. 
   Locate the CMOS battery at the bottom-right corner of the motherboard.
   

your f**ked

Remove all ram memory modules.

The J3 Clear CMOS Jumper is in the middle of the ram memory compartment.

This is a link to a free Service Manual for the Aspire 5630 series of Notebook PC,

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-acer

Go down to the second 'paragraph' that begins with Satellite 1200.
Go down to the 8th line in this paragraph. (Begins with 5538)
Go across, and left-click on 5630.

This is a PDF file.
It may take up to 30 seconds before the first page comes up.
It may also take additional time to download.

Using the PDF file page number box, go to Page 12, or Page 100.
Both pages are an illustration of the Bottom of the motherboard.
J3 is to the right/middle. (Under the ram memory. DIMM 1 and DIMM 2)

For additional questions please post in a Comment.

Regards,
joecoolvette

(Flat tipped screwdriver that the blade just fits across the contact points. May be a clear cover over these contact points. Peel it back. Make sure it is reused)

i think the cmos battery needs a replacement cauz you say the time is syncronised when you shut down your machine.man resson for this is the cmos battery is off needs replacement.
but befor that check the time option by double clicking on the time on the taskbar and go to internet time option and choose to syn it with world time and also check that you have choosed the corect time region.

1.I thing you set the password for bios,So then only you got like that.
2.So diasble the bios password otherwise fomate your hard disk
3.Otherwise rest you CMOS battery.

You need to remove the cover over the fan assembly, and look over to the side toward the hard drive, and you should see the cmos battery, you don't need to take the machine apart, just reach in with a small screwdriver and keep the battery disconnected for five or so minutes, then after you put the cover back on, the password will be gone

u have to open back side of laptop the cmos cell is on the motherbortd chi[pset.open back side.

Hi !
Just try to short the combs of J3 with flat screwdriver ... firmly ...

I experience that already, system date /time is loosing, You need to replace the cmos battery and set the time in the bios setup.

I guess there no other fault except the cmos battery busted.

may this help, melnavz

PS:
pls do not rate me if my solution not solve the issue and you need more further information. but if is invaluable solution rate me fixya.

hello,
the only option now is to reset the CMOS battery and this is done by opening the laptop or maybe you look for a technician near you to FLASH the BIOS.
You need to be careful.
Its fun !!!