Cover asus m51s

SOURCE: Fujitsi Simens Amilo D Laptop Buffer / CMOS battery problem

Hey man!I think I can help ya!I have an AMILO D 7830.I hope that yours is like mine. Turn the laptop upside down and then you'll see it's bottom!:P Alright now you can see two sides that can be unscrewed.The one that is to the opposite side of the cd drive is the one that can really be unscrewed.The other one has more screws that are covered.So,unscrew the side I said before and then you'll be seeing the battery the ram cards and some other stuff I don't know what they are.:P Now look closely to the opposite side of the battery and under the metal case.Somewhere there in the dark is your battery lying and waiting for you!I hope I 've helped you enough!

SOURCE: SONY VAIO CMOS BATTERY LOCATION

Correction...

The CMOS battery is located under the system board, and is not accessible from under the keyboard.

The keyboard has to be removed in order to change the CMOS batter, (another reason why I don't like Sony laptops.)

Below is the batter I just pulled from a user's VGN-FS660\W

SOURCE: CMOS

The cmos on the Pavilion is going to be in one of three places, and will be one of two styles of battery. The cmos style will be either a large watch type battery about the size of a nickle located in a slot on the mother board, or in a yellow or greenish pouch with two wires leading to a connector, located under a cover on the bottom of the machine, or under the keyboard.

SOURCE: CMOS

http://bizsupport.austin.hp.com/bc/docs/support/SupportManual/c01152880/c01152880.pdf

chapter 5.10

SOURCE: Cmos battery on a Sony Vaio Laptop VGN FE31M

It should be located somewhere on the motherboard wich means pulling the computer completely apart which unless you know what you are doing may be a little difficult for some, but not inpossible.