Hello.My BIOS resets to default every time i shutdown my coputer.What could be the cause of this?

Answer 1

the BIOS battery of your motherboard need to be replaced.seem the battery get leak because of age.
or in some of motherboard type you unplug all the electrical wire that connect to your pc.try to unplug it.see if it still resets.
if it does resets replace your battery CMOS.and update your BIOS CMOS.
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Answer 2

BIOS [user-friendly enter output device] has reminiscence CMOS [Complementary steel–oxide–semiconductor] based reminiscence. you could reset CMOS connecting 2 pins on the motherboard - that relies upon from kind to kind. people usualy do no longer worry to hunt the manuals for that 2 pins so as that they only take out the battery, conect + and - and return battery. CMOS is then restarted [examine: lower back to default settings]. CMOS is in many situations restarted in case you have 'too plenty' overclocked CPU [familiar Processing Unit] or made some deadly replace that bring about no longer beeing able to instruct pc lower back on. Now if your restart CMOS pc will artwork widouth a situation, yet once you [or somebody else] earlier overclocked CPU that action [restarting CMOS] will bring about low/slower device preformance. additionally your clock schould be restarted too. in many situations its no longer something. wish this helps.

Answer 3

The most likeky cause is a bad cmos backup battery.

older computers use a lithium "coin" cell to maintain power to the time-of-day clock and the low power cmos memory that stores the bios settings. Newer computers use flash memory which requires no power. The lithium cells are good for three to 5 years, and most are replaceable. On the motherboards that don't have a replaceable lithium battery,there is usually a small connector to attach a battery pack.

Answer 4

Try replacing the CMOS battery (<$10) on your motherboard.

It is about the size and shape of a dime. Radio Shack / The Source has them.

Answer 5

One other thing to consider. Don't laugh! Some people make changes to their bios, and when completed, they forget to save those changes. It could be a battery as others have mentioned.

Answer 6

The CMOS battery is usually a 3032.

Answer 7

yes,.. it seems the battery back up of your mainboard CMOS is damaged or not fixed properly or misplaced.

Answer 8

Check the battery on the mother-board. might be dead

:)

Answer 9

a dead cmos battery.