How to unlock an extensa 5620z

Assuming that after you enter the wrong three times it should generate a lockout error. At this time you can follow these steps to unlock the system:


http://pcmediks.blogspot.com/2010/11/how-to-remove-hdd-user-password-in-acer.html



Basically, once you unlock it, you should be able to boot into the BIOS and disable the HDD password. I'd say to do that first but you would need the password once you were in the BIOS to be able to disable it thus the recommendation to essentially set it to something you know first via the guide above.

Is the Administrator password and the only person who now it is the same person who start the acer for the first time. But if that person don't put any password just press enter.

Here is a post about how to unlock Acer Aspire with Windows Password Recovery Tool 3.0, you need it. Don't waste time at unnecessary help.
http://www.windowspasswordsrecovery.com/lost-acer-windows7-password.htm

you need to remove the keyboard , for replacement ?

go to this site and see if you can find what you need


http://user-guides.co.uk/cddownload/Acer/AcerExtensa/Acer-Extensa-5620-Service-Guide-Manual-Disassemble-Remove-Replace-Repair-51149.html

you can get the driver on this below site, but on there you must select your opereting system if you using XP or Seven Or Vista ..etc.. then download it here http://www.epson.com/cgi-bin/Store/support/supDetail.jsp?oid=56994&prodoid=54343199&BV_UseBVCookie=yes&infoType=Downloads&platform=Windows&x=26&y=8

plz check the link

go to this site and follow the download tab on the left side of the screen, then enter the PC info and download the files you need.

http://gd.panam.acer.com/home/

Hi,
Call Acer Tech support these guys will verify some details and might give the master password to unlock the drive,

Further Queries are welcome
if you find my solution helpfull please do rate me

I BOOT THE LAPTOP WITH AN UNLOCKED HDD ENTER TO THE BIOS PUT A PASSWORD YOU CAN REMEMBER SAVE AND REBOOT THEN ENTER AND TRY TO CHANGE THE PASSWORD THIS TIME ENTER YOUR PASSWORD THEN LEAVE IT IN BLANK ONE TIME AND BEFORE COMFIRM SWAP THE HDD PUT THE LOCKED ONE IN THE BAY AND COMFIRM A BLANK PASSWORD AND VOALA!!! UNLOCKED.

Hello,

Re set the video cable inside the machine.

AKA pull it out And put it back in should work.