Before you jump on replacing your CMOS batter, safety rules first. The inside of a computer is a bad place full of electricity and sharp edges. Make sure that your computer is unplugged from it’s power source. Also be careful on the inside of your computer, most computer cases are unfinished metal and has very sharp edges.
Here are the following tools you need to change your CMOS battery
1. a X-point screwdriver
2. an anti-static strap(optional but recommended)
3. a new battery (seems logical)
2. an anti-static strap(optional but recommended)
3. a new battery (seems logical)
§ First, When you remove the old battery from the motherboard, the information that’s stored in the CMOS will be lost, so you should write down the BIOS settings.
§ Unplug all the cables from the back of the computer, if you are not familiar about the ports at the back of your computer you should make a note on where they came from so you can easily put them back when your finished.
§ Move the computer somewhere where you can work on it with ease.
§ Remove the cover by locating the screws around the outer edge at the back of your computer. Some computer cases only require you to remove 2 screws on one side then a panel can be removed allowing you access to the computers insides, others you must remove 6 screws and remove the whole case by sliding it to the rear and lifting it off.
§ Now make sure that you read and understand the safety instructions about static. — Dangers of a Static Electricity
§ Look inside and will see a round silver thing that’s almost a size of bottle cap. Carefully lift the retaining clip and slide the battery out.
§ Back to your computer insert the new battery by lifting the clip and sliding the battery in.
§ Reinstall your case and plug all the cables back (you did remember to label them didn’t you)
§ Power on your computer and check the bios, If you look carefully you will see a line that says something like “press del
§ You will now be presented with a blue screen with a lot of options on it, The one we want is load optimised/default settings.
§ Exit and save your bios setting, your computer should now reboot.
If every thing went well then your computer will now be up and running.
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