How to boot back into the backup BIOS:
Method 1
- Switch off your computer
- Hold the power button until your computer starts and shuts down again
- Press the power button again, your backup BIOS should kick in now and should re-flash the backup BIOS if there's anything wrong with the new one.
Method 2
- Switch off your computer
- Hold the power AND the reset button for about 10 sec, then release.
- It should boot into the backup BIOS now.
Method 3
Only use this if nothing else works.
- Short out pins 1 and 6 on the main BIOS chip by attaching a jumper to both the pins (pin #1 should be marked with a red dot or whatever)
- Tell a friend to press the power on button while you do this, because right now you are holding the jumper on the pins
- Remove the jumper you're holding between pins 1 and 6 as soon as you hear a beep.
- Backup BIOS should boot now.
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