Before you begin
Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.
Work through these checks
0 of 3 complete01Replace the CMOS battery on the motherboard
- Replace the CMOS battery on the motherboard
What to expect
Check whether the original symptom still occurs.
If it does not helpContinue only if this check applies to your device. Consult its manufacturer if you are unsure.
02Use the USB BIOS Flashback function (if the board has a button)
- Use the USB BIOS Flashback function (if the board has a button)
What to expect
Check whether the original symptom still occurs.
If it does not helpContinue only if this check applies to your device. Consult its manufacturer if you are unsure.
03Check the rear I/O panel for a short
- Check the rear I/O panel for a short
What to expect
Check whether the original symptom still occurs.
If it does not helpContinue only if this check applies to your device. Consult its manufacturer if you are unsure.
Possible causes
- Dead battery CR2032
- Short circuit on the motherboard
- Aborted BIOS update process
- Age of capacitors
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