Bios Unlock and Reset Service If your laptop shows the Dell Service Tag screen with service tag e.g. 1234ABC-595B, 1234ABC-2A7B, 1234ABC-1D3B, 1234ABC-6FF1, 1234ABC-1F66 or a 5 numbers System Disabled Code, after three wrong attempts, we can help you to get full access to your Bios. Supported Dell models: DELL LATITUDE:E5420 E5520 E6220 E6320 E6420 E6520 E5430 E6230 E6330 E6430 E3330 E5440 E5450 E5540 E6440 E6540 E7240 E7440 E7450 E6440 E7440 E5470 E5570 E7240 E7250 E7270 E7470 E7570 and more DELL PRECISION:M4800 M6400 M6500 M6600 and more DELL INSPIRON:1525 1545 1000 1464 1501 1520 1564 1764 N4010 N7010 5150 11Z 3440 3458 3558 5558 Service may work for other Dell models as well, but please ask before you purchase it. Just send us your complete Service Tag e.g. 1234ABC-595B, 1234ABC-2A7B, 1234ABC-1D3B, 1234ABC-6FF1 or 1234ABC-1F66 shown on the startup screen or in Bios, in the security setup options in order to reset your bios. 1234ABC-1F5A and 1234ABC-3A5B are not supported! In case it shows a 5 numbers system disabled code after three wrong password attempts, please send this. You will get full access to all Bios settings and can change or reset the Admin and Bios Password. You get all needed instructions instantly. You will get 100% of your money back if this solution doesn't work. This is a service, not a physical item.