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Apple G4 notebook CMOS battery replacement

How do I access the battery in the computer?

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If you turn the Laptop upside down (making sure that the laptop is not turned on at the time!) you will see some compartment panels that can be removed. Undo the screws to these and you will see the CMOS battery in one of them. Have a replacement battery ready to insert...remove the old battery and insert the new one. Put the cover back on and your done! Hope this helps.

Posted on Dec 05, 2008

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I got a used imac 700mhz and I can't log on without admin password


remove the CMOS Button battery for 5 minutes (Located on the mother board inside the computer) and that will clear the password protection, the other option is to buy the recovery disks and reload operating system.

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Power off computer - remove and then reinstall (or replace) cmos battery. This should reset cmos password.

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How to remove cmos/bios password ?


A. By Using the Motherboard Jumper:
In most motherboards CMOS battery is soldered, which makes it difficult to remove the battery. In this case we use another method.
Almost all motherboards contain a jumper that can clear all CMOS settings along with the BIOS password. The location of this jumper varies depending upon the motherboard brand. You should read your motherboard manual to check its location. If you don't have the manual then look for the jumpers near the CMOS battery. Most of the manufacturer label the jumper as CLR, CLEAR, CLEAR CMOS, etc.
When you find the jumper, look carefully. There will be 3 pins and the jumper will be joining the center pin to either left or right pin. What you need to do, is remove the jumper and join the center pin to the opposite pin. e.g. if the jumper joins center pin to left pin, then remove it and join center pin to right pin. Now wait for a few seconds and then again remove the jumper and join the center pin to left pin.
Make sure to turn the PC off before opening the cabinet and resetting the jumper.

B. By Using Software:

I have found that BIOS/CMOS Password Recovery Tool is the most effective.:
BIOS/CMOS Password Recovery Tool is a program that works instantly to remove any lost or forgotten BIOS/CMOS password. Simply boot your PC to DOS and execute the program, and get access to forgotten BIOS/CMOS passwords in just seconds
BIOS/CMOS Password Recovery Tool Service: http://www.biospasswordrecovery.com/

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Power Book G4 reinstall using Power Book G5 OS X10.4.6


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1 Answer

Tower problems


You may need to replace the cmos battery, its a cr2032 3v button cell
Make sure all your expansion cards and memory are reseated.
Make sure all cables are reseated.
your power supply could be bad

If that doesn't work try this


Here is my fix for the dell dimension 4400 amber light problem. It works!
replace cmos battery.
then unplug power cord form wall about 5-10 secs.
then plug it back in, wait 5 secs.
If amber light comes on, press and hold power button until it goes out.

(with light out, press and hold power button while amber light comes on and goes off again holding power button 2-3 secs after light goes out.) repeat whats in parenthesis until computer turns on
it should only take about 6, 7 tries.

After the computer boots, you may want to setup cmos or boot into windows.
After you shutdown, unplug power cord for 5-10 secs then plug it back in.
Press and hold the power button, computer should come on.
I found that's the only way to turn on the computer.
If you shutdown and don't unplug power cord the computer may not boot, mine didn't.
Strange I'd say

A+ Technician

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3 Answers

One of my computers says that my "System Battery is dead" and I don't know what to do


system batery refers to a watch bater on the mother board used to keep time
it is as easy to eplace as a watch batery

Instructions Difficulty: Challenging Things You’ll Need:
  • Replacement Battery
  • Electronic Or Printed Backup Copy Of CMOS Settings
  • Backup Utility
  • Grounding Wrist Strap
  • Phillips Screwdriver
Restore the CMOS settings Step1If you've never made a backup copy of your CMOS settings (by using a backup utility program such as Norton Utilities or by printing a hardcopy out on paper), look them up in the printed documentation for your system or call the vendor of your PC. Restoring your CMOS settings from a backup will help determine whether the battery is the problem. Step2If you're using a backup utility to restore the CMOS settings, insert the emergency startup disk and follow the prompts. Step3Use the Setup utility that's built into your PC's BIOS to re-enter your CMOS settings manually. Restart your computer and wait for a screen that tells you what key or key combination to press for Setup. Step4If re-entering or restoring your CMOS settings solves your problem, then it's possible your battery is fine and the settings were corrupted by a virus or some other anomaly. If, however, your PC "forgets" the CMOS settings you just re-entered or restored after you turn the machine off (and then back on), you probably have a bad battery. Locate the dead battery Step1Turn off your PC. Step2Before opening your PC case, put on a grounding wrist strap to prevent discharging static electricity onto any sensitive components. In fact, throughout this procedure it's a good idea to frequently touch something metal (other than your PC) that's resting on the ground, to make sure you discharge any static electricity. Step3Open the PC. For most PCs, this entails removing a few screws with a Phillips screwdriver and sliding the case off. Step4Locate the battery on your PC's motherboard. This is trickier than it sounds because PC manufacturers have used many different types of batteries for CMOS settings. The most common are lithium, like the kind in watches, but they could also be a pair of AA batteries. Or they could look like two cylinders encased in red plastic: a silver box or a red and black box. Step5Draw a picture of the battery, showing its exact position on the motherboard. Remove and replace the battery Step1Examine the battery carefully to see how it's attached to the motherboard. Most likely, the battery is attached by a clip or with Velcro. Some older PCs might have the battery soldered to the motherboard. Unless you're confident with a soldering iron, don't attempt to replace one of these. Step2After you've removed the battery, take it to an electronics store to match it with a replacement. Step3Replace the new battery in exactly the same position as the old one, referring to your drawing (see Warning). Step4Restart your PC and re-enter or restore the CMOS settings.

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1 Answer

Problem with power supply


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Richard

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