I have a quite old DELL Optiplex and I put a combination lock on the case so no one at work would open it, but I forgot the combination and I can't open the case to fix my bios problem. I recently put a bios password on my system and when I tried logging on, it prompts me for a password but when I put the password in it says, "invalid password". Is there any way for me to fix this without opening the case, because to remove the lock I would have to damage the case!

Hmmm??? How many numbers in the combi lock?

Sorry, not without dropping the battery out of the mobo.