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You may be able to reset the bios by shorting out the battery leads for 30 seconds. This may however completely drain or damage the button battery. The only other way to fix this would be to unsolder the battery and solder a new one back in I've done it before on a dell laptop.
Some times the AC adapter and battery dies and saves your laptop motherboard.
Follow the following steps to check once again. Remove the battery and the defective adapter and check if you can borrow a known good working adapter and see if your system works / turns on just by connecting the power adapter and turning it on (without the battery) if it works then repeat the check with the battery on.
If both the test works then your adapter is the only issue, get it replaced. If both fails, you have to replace or service your motherboard.
are you sure your are exiting the bios saving your changes? if for some reason you are unable to save your changes it is possible that the cmos battery is going bad, replace the battery and test.
another reason why you may not be able to make any changes is because you may not be a supervisor or accessing the bios as a supervisor but as a user. you may have set a bios supervisor password. if you don't remember what that was you may have to reset the password:
to reset your password do the following:
Turn off the computer.
Open the computer case.
Locate the blue J8C2 Flash/PWD jumper block on the motherboard.
Place the jumper on pins 2 and 3 for clearing the passwords.
Turn on the computer. Wait for an audible beep from the
computer. A message appears stating that the NVRAM and password have
Turn off the computer.
Place the jumper back on pins 1 and 2 for normal operation.
first disconnect ALL cables except power suppliy and frond panel switch. Startup and see if goes further.
dont forget to disconnect the front panel usb cables also !!!
if it goes better, connect he keyboard, reboot and enter bios to see.
if it still hungs up at the start with all cables disconnected then a major chip on your motherboard is burnt (maybe the disk controller).
sorry i dont think a solution oher than buying a new motherboard.
those arent seriously important wires anyway
all they do is make it so you can use your front usb and audio jacks
you should have the same ones on the back of your mobo
you can try finding those wires from your case maker
what brand case is it
try going to there web site to see if there available
if not you may have to soldier them together to get them working again...
one more thing
maybe someone is selling those wires or just the front part of that case
hey try to unplug the power cord from the powersupply now open the case and unplug the powersupply to the the motherboard and then press the reset button on the front for 15 seconds and than connect the motherboard powercable and plug in the powercord back in to the powersupply and try to restart the computer. please tell me if this works and ANY thing that happnes ok best regards mike
Actually it could be the battery. They are not as good as they used to be. As for the motherboard you would need to know what your case could support. There is ATX, micro ATX, E-ATX, & BTX motherboards. It all depends on the case. Hope this helps.
I'm going to assume that you are setting the date and time right after the computer boots up and if you are doing this, the most common answer would be a dead battery on the motherboard that keeps the bios time. These are usually located on one of the corner regions of a motherboard near a chip that is usually the bios chip that keeps all necessary information so the computer KNOWS how to boot up with the configuration as preset by the factory or as modified by you. These batterys are usually good for about 3 years although some companies claim greater time. But I suspect your motherboard is very near the age bracket I am speaking so changing the battery with a new replacement from Walmart or other discount store that average around 4 dollars apiece MAY fix your issue. Only replace with like battery and BE CAREFUL during replacement as is sometimes easy to break a prong that keeps the battery in place on the motherboard that would lead to inconsistent motherboard bios function at best and possibly your exact issue. . Also while you have your case open, make sure there are no loose metal objects such as loose screws lying around. It shouldn't hurt to shake the case a little to test for loose objects lying underneath the motherboard. Try to make sure that all external connections are disconnected before shaking else the monitor might fall down while you are handling the case.