could someone tell me where the cmos batter is in a dell inspiron 3800
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If you haven't already done it, then open up your case and look around on the motherboard for a shiny round thing that's about 1.5cm in diameter, pull it out off it's socket and there you go.
It should be near your PCI-ports or near your CMOS-jumper.
looks like a watch battery... should be obvious on the mobo
Isn`t a Dell inspiron 3800 a laptop?
Why are you particularly looking for the cmos battery?
You should be able to download the service manual from dells website.
looking for cmos battery to reset password bought it at a sale but it has a password in it need to remove it or reset it
In that case, you should take a look at this thread HERE. As far as I`m aware Dell laptop passwords are held on an eeprom chip, so taking out the battery wouldn`t help.