Need CMOS battery in my Compaq V2000. Where is it located?

Remove A Cmos Battery From A Compaq V2000 Laptop

The Complementary Metal-Oxide Semiconductor (CMOS) in a computer is responsible for storing hardware settings and time on your computer. The CMOS is powered by a small battery and is able to store information whether your computer is turned on or off. While the standard CMOS battery lasts for up to ten years, you may need to replace your CMOS sooner than that. If you password your BIOS and forget the password or need to reset your configuration back to the default, you can remove the CMOS and re-insert or replace it.

Instructions
1. Unplug the computer from the wall outlet and unplug the AC adapter from the computer.

2. Turn your Compaq Presario V2000 face down and slide the battery release latch to the left to disengage the battery from its position. Remove the battery.

3. Unscrew the screws over the hard drive cover, which is located in the lower right corner of the laptop if your laptop is placed with the battery away from you. Lift the hard drive tab, located on the left side of the hard drive, and slide the hard drive to the left to remove it from the computer.

4. Unscrew the single screw located directly under the optical CD/DVD drive. Insert a very thin item, such as a paper clip or pin, into the hole located on the optical drive to open it. Slide your optical drive out of its tray to remove it.

5. Remove the two screws located on the switch cover, which is directly under the battery. Turn the computer right-side up and open it as wide as it will go. Use a flat tipped screwdriver to lift up the switch cover that is directly above the "F1," "F5," "F11" and "Insert" keys.

6. Unscrew the four screws that hold the keyboard in place. These screws are are located in the upper right corner of the computer under the switch cover that you just removed. Lift the keyboard up and slide it forward until it rests on the palm rest. Unplug the zif connector, which is located directly above the palm rest, to disconnect the keyboard. Lift the keyboard up and out of the laptop.

7. Turn the computer upside down again and remove the memory modules by unscrewing the two screws over the memory compartment located directly below the battery slot. Unclip the two clips located on each side of the memory module to release it from its slot and slide it out of the computer.

8. Unscrew the two screws on the PCI cover directly beneath the memory module. Disconnect the two wireless antennas above the card. Spread the two clips securing the mini PCI card into place and lift the card up and out at a 45-degree angle away from you.

9. Flip the laptop back up on its right side and disconnect the display cable located in the upper left corner above the keyboard area underneath the switch cover you removed earlier. Then remove the two pieces of tape in the upper right corner that hold the wireless antenna in place. Remove the two clips located beneath the tape pieces. Unscrew the two screws on the upper left corner and the two in the upper right corner that hold the display into place. Remove the display assembly.

10. Turn the computer back upside down and remove the remaining 19 screws. Lift the base enclosure straight up out of its place.

11. Locate the CMOS battery, a small circular object, and lift it up out of its place. Leave it out for five minutes and reinsert it to reset your settings. Re-assemble the computer without the battery and plug it into the wall.
Remove Cmos Battery From Compaq V2000 Laptop

In order to remove the battery pack you should slide the Lock key to the Unlock position and keep it there until you have removed the battery. In the following video (at 00:08) you can see how to do it and replace the CMOS battery also. Hope that helps. How to replace the CMOS Battery in the Compaq Presario CQ60 Laptop

Here is the manual you can read more and see how to on page 46.
http://tim.id.au/laptops/hp/hp%20g60%20compaq%20presario%20cq60.pdf

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Here is the location of the appropriate Service Manual - you will have to partially disassemble your computer to reach the battery and replace it.

http://h10032.www1.hp.com/ctg/Manual/c00444244.pdf

There is also a BIOS battery but this would not stop it working.

try to rest cmos by remove laptop battery & cmos battery for about 30s
thnx

try to reset BIOS by remove CMOS battery from motherboard and re insert again...

which batt the main slide it out on bottom or the side should be a small slide to release it

cmos you have to look under all the panals even keyboard and heat plate under it to see if it is visible if not you have to take most laptops completely apart to get to the bottom of the mobo where they usually put it

It would help if you will clear the BIOS or the CMOS of the laptop. It can be cleared by pulling out the cmos battery of the laptop for a long period of time or by locating the jumper/dipswitch on the motherboard that would clear the BIOS. You may go to these links on ways on how to clear an unknown BIOS password.

http://www.computerhope.com/issues/ch000235.htm

http://articles.techrepublic.com.com/5100-10878_11-5031589.html?tag=rbxccnbtr1

http://www.uktsupport.co.uk/reference/biosp.htm

Take the battery out. Unplug the charger from the computer. Press the On button for 30 seconds. Then plug the charger in. If it works, then put the battery back in and you're in business again.

The controller gets locked up sometimes, you need to clear it out and let it reboot like that....