Acer V5-571 Series BIOS Locked and need code / Help

When trying to boot to the OS, I get an error 0xc000021a and the PC continuously tries to reboot.

If I press F2, I get a dialog box with Password/Unlock Key and the code 11DAA97B.

I am trying to get it to boot to CD so I can re-install Windows.

I tried entering a code from, but it did not work.

Hopefully, somebody can help with this issue.

Answer this question I have this problem too

Is this a good question?

Score 1


Hello Sir I forget My laptop Acer aspire One 753 Bios pawsood What I do


Add a comment
Black Friday
Broken doesn't stand a chance.

2 Answers

Most Helpful Answer

On the Acer Aspire V5 series, if you open the bottom cover and remove the RAM you should find a couple of pads on the board labelled G2201. Remove the battery and power cord from your machine. Use a piece of wire to short those two pads. While holding the wire, plug the machine back in, then hit the power button. This should clear the password. I had to do this a number of times, but what finally worked was to hold the power button down while the machine came on, then shut off. I cycled this a few times then eventually the password was removed and I was able to get into the BIOS setting screens. Good luck!

Was this answer helpful?

Score 4


Hi, thousand thanks to you. I thought I loss my laptop. Fortunately your answer help me out. God bless you.


Thanks, I helped!


I tried a lot of things to get this laptop fixed for a friend of mine. Your info did it. Thank you to put this information out there ;-)


Add a comment

password/unlock key : .........

unclock key hint number 5ce4c08f

Was this answer helpful?

Score 0
Add a comment

Add your answer

John Presler will be eternally grateful.
View Statistics:

Past 24 Hours: 21

Past 7 Days: 153

Past 30 Days: 719

All Time: 10,295