Hi! So maybe you know it and maybe you don’t…your PC has a battery in it!
The battery lets your PC ‘remember’ its settings and configuration…a lot of that information is stored in the PC’s BIOS so the battery is often referred to as the BIOS Battery.
Here’s what it looks like:
So what’s a BIOS? The BIOS is boot firmware (meaning it lives on a chip, not a disk drive), designed to be the first code run by a PC when powered on. The initial function of the BIOS is to identify, test, and initialize system devices such as the video display card, disk drives and other hardware. It also remembers the date and time. (that’s from wikipedia).
When the battery runs out, the PC ‘forgets’ its configuration. That could lead to you receiving the dreaded error message on your screen “No Hard Drive Found” or other some such blather. It’s possible that your hard drive took a powder but if that message is the first indication of drive failure, I suggest replacing the battery.
The standard BIOS battery is a CR2032 3v watch-type battery. I got my last one at Radio Shack; I think it’s about $6.
Just so you know, a good hint that your BIOS Battery is running out is your date and time on your PC is messed up. Hover your mouse over the clock in the system tray at the lower right of the screen. If it’s not correct, fix it. Then do the hover thing every day.
To change the battery, turn the PC off, unplug it, and open the cover. (Don’t be afraid!) When you open the PC, you’ll see the battery on the mother board. Pop it out and put the new one in. It really is easy! There are step-by-step guides on the internet so just do a search.
One of my colleagues’ PC got the ‘no hard drive found’ message this morning; I got that queasy feeling I get when I feel my day starting to suck. Then I recalled his date & time being messed up last week. I popped in a new battery and I didn’t have to enter any settings — the PC came right back up! Yes!!
File this one in your memory…it could save your or a friend’s day!