You may be able to unlock it. Start by going to www.lenovo.com and download the Hardware Maintenance Manual for your PC.
However there is a lock so deep in the hardware it requires a system board change to fix it. This was done in order to turn stolen computers into scrap and thus not worth stealing.
t
April 2008
I can answer this question...
a friend found a old laptop ibm thinkpad 600e and its locked?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix notebooks/laptop pcs.