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Posts Tagged ‘cmos battery’

Changing the CMOS Battery

When I turn on my computer this message comes up: MSI CMOS BATTERY LOW CMOS DATE/TIME NOT SET.PRESS f1 to run setup. Can you help?Kate Dubensky

Computer CMOS Batteries

The CMOS battery is your computer’s internal memory and real time clock power source. This battery allows your computer to initialize its boot up procedure and remember the time and date, even when there is no other power source. CMOS batteries typically last between 2 and 10 years, but thankfully they aren’t very difficult to replace. The CMOS battery is round and flat, about the size of a dime, but about twice as thick and will most likely say something like Lithium Battery and a code and voltage on it.

Try to Force the Computer to Recharge the CMOS Battery

The first thing that you can do is try to force the computer to charge the CMOS battery. You can do this by leaving the computer on for about 24 hours then reboot and see if you are still getting an error message.

Locating the CMOS Battery

If it doesn’t work, then you are going to need to open the computer. If you have a PC, lay it on its side before opening. If you have a laptop, turn it over on a flat surface. Make sure that you unplug it from its power source and discharge any static electricity before touching anything inside your computer. Open the case and look for the battery on the motherboard. You might need to use your computer user’s manual to help locate the battery.

Remove, Reseat or Replace the CMOS Battery

Sometimes unseating and reseating the CMOS battery is enough to get things working again, so you could try slipping it out then repositioning it. Otherwise, remove the battery and take it with you to the computer shop to buy a replacement. They are inexpensive, under $20. You should know that, in some cases, CMOS batteries are not removable. If it doesn’t come out easily, or if there isn’t a clip that you can lift to remove it, it is best not to force it. Either take the whole unit into a shop or consult your manual for more information.

Contact Technical Support

If you are going to open your computer and remove components from the motherboard, you might want to contact a remote technician for some real time advice. The tech can go through the steps with you to make sure you are comfortable. We recommend the services available here.

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