How to replace a motherboard on a dell latitude e6520

download password breaker software

I can only think of 2 ways.
1. You can flash the BIOS which will put settings back into default. OR
2. Download updated BIOS and install via USB. That should override the existing, but will not necessarily unlock the password, however, it may allow you to flash it back to default.
This is the link to updated BIOS info for your computer.
Dell Latitude E6520 System BIOS Driver Details Dell US

This has worked for me on other computers, but I've not tried it on a Dell Latitude.

Hi, you can watch the following video at utube and get an idea..
http://www.youtube.com/watch?v=pxrRsFySy7Y

Here is a link to re-image (install OS) on your laptop:
ftp://ftp.dell.com/Manuals/all-products/esuprt_laptop/esuprt_latitude_laptop/latitude-e6520_Setup%20Guide2_en-us.pdf

This is a video section problem in the laptop motherboard. Before going to service, ensure that the driver is current. Uninstall and reinstall video driver. Update all drivers for your laptop. Still the line present means that service is only option

Remove the CMOS Battery and let the laptop sit for 1 to 2 hours and it will forget the date, time and passwords. The CMOS Battery is on the motherboard somewhere. It will be a silver battery about the size of a nickel and you'll need a small flat head screw driver to pop it out. Sometimes it is covered in vinyl and has a cable that plugs into the motherboard. Either way, most times you'll have to take the laptop completely apart to get to it.

Bios passwords are very difficult to resolve, go to www.ebay.com Type: bios password, a list will come up, stick with the sellers that offer solutions for Dell only, this will give a much better chance of success.

Dell Latitude E6520
#2V7T9S1-1D3B
Please help me

the only unlock able site service for this is Dell.com or biosremoval.com there is no other. here is the link for your specific model DELL LATITUDE E6520 BIOS PASSWORD