I am loosing time and BIOS defaults when the Computer is Unplugged from AC. I have replace the mother board battery but the problem persists. There is a 3 point pin header near the battery. A jumper links two pins. Perhaps it is in the wrong place. What is the correct place and what else can I check?
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you can try to remove the bios battery with computer unplugged from the wall. the bios battery is a small watch battery on the mother board typically you can remove it with the help of a small flathead screwdriver.
start the computer and while its comming on ( or loading) press f1 or the delete key holdig it down for a few seconds this should get you into the bios. you can then reset the bios to default and then save changes and exit.
Did some checking. The mouse,keyboard and screen get there power the motherboard and the a:drive b:drive c:drive d:drive get there power from the power supply. The mother board gets it power from the power supply. So the problem is in the mother board. You can try to remove the battery for a minute and put it back with it unplugged of course to reset the Bios or jump the Bios pins on the board same thing.Check to make sure nothing is loose inside.Sometimes video and ram that get loose will make a computer beep and shut down and a bad stick of ram will to. http://www.chuckstar.com/blog/technology/gadgematch-3-buy-a-new-pc-vs-build-your-own-system/.
Turn the computer off.
Disconnect the AC power.
Remove the side-panel to expose the motherboard.
Look for a silver-coloured object, about the size of a US $0.25 coin.
This is the battery that helps the clock on your motherboard keep the correct time.
Look closely: one side of the battery shows engraving, and the other side (which you cannot see is blank).
Gently remove the battery.
Take the battery to a computer-store, to buy a replacement.
Press the new battery into the socket, orienting that engraving to match the engraving on the battery that you removed.
Restart your computer.
Press DEL to enter BIOS SETUP.
Click "Load BIOS defaults".
Reset the date/time.
Click "Save and Exit" from BIOS SETUP.
Try this remve the batteries again and leave out overnight I mean fr hours on end your bis will reset sometimes it has to be 24hours I know it sounds unbelievable but after all it cost nothing but time. What hapens is the bios will reset then put your batteries back in and go into setup again in the bios......and reset to default settings be sure to change the time and the date manually then save by pressing f10 goodluck please come back and tell me how you do..
hmm you might need to flash the bios or reset the bios follow these instructions.
TO RESET BIOS
1.) unplug the computer system 2.) remove the side panel
now you have two option OPTION 1 3.) locate the jumper jp1 or jcmos1 you can use your manual for a refrence its a 3 pin jumper located cloase to the battery 4.) the jumper is currently on 1 and 2 , set it to 2 and 3 wait a few seconds and set it back to 1 and 2 5.) THATS IT BIOS PASSWORD RESET 6.) boot system enter setup and load optamised defaults. 7. save and exit setup
OPTION 2 incase you cant find the jumper 3.)remove memory 4.)remove the battery 5.)press the power button 5 times to empty any charged capicators 6.)replace battery and memory 7.)boot ystem enter bios load optimised defaults , save and exit