Computer Bios password lock.

hmmm... just remove your memory card and under it you'll find two terminals it is labeled as bios rst

The simplest way is to remove the CMOS battery, leave the machine for at least 30 minutes (but longer is better), and re-insert the battery. This should completely reset the BIOS and remove any password protection. Finding and removing the CMOS battery on a laptop is not always easy and usually involves removing some of the casing.

I had the same problem on a second hand desktop some years ago and I found a software to remove it and modify the bios. It is not so easy for a laptop, because they have often extra securities. There is a Python script available on this blog that can help : http://dogber1.blogspot.com/2009/05/table-of-reverse-engineered-bios.html