Tip & How-To about Computers & Internet
If you have access to the computer when it's turned on, you could try one of those programs that remove the password from the BIOS, by invalidating its memory.
However, it might happen you don't have one of those programs when you have access to the computer, so you'd better learn how to do manually what they do. You can reset the BIOS to its default values using the MS-DOS tool DEBUG (type DEBUG at the command prompt. You'd better do it in pure MS-DOS mode, not from a MS-DOS shell window in Windows). Once you are in the debug environment enter the following commands:
O 70 17
O 71 17
O 70 FF
O 71 17
Invalidates CMOS RAM.
Should work on all AT motherboards
(XT motherboards don't have CMOS)
O 70 2E
O 71 FF
Note that the first letter is a "O" not the number "0". The numbers which follow are two bytes in hex format.
Posted by prasant... on
Feb 22, 2011 | IBM ThinkPad R30 2656 Notebook
Jun 10, 2010 | Lenovo IdeaPad Y510 Notebook
Jun 02, 2009 | Dell Inspiron 1300 Notebook
Jan 23, 2009 | Dell Inspiron 8500 Notebook
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