Computer Will Not Boot Asking For Password

A few days ago, I plugged my iphone into my laptop and my computer froze up. I hard booted it and the computer booted up to what looked like the screen that you get when you hard boot it, I went ahead and pressed F1 to resume and what looks like a bios password box comes up asking me for a password. I never put a password on the Bios. So I tried to use my login password and got a password failed message. I tried again and the computer flashed and turned itself off. I turned the computer on again and I get to the Toshiba loading screen where you can select F2 or F12, I select nothing and it brings me to the password window.
I pulled the HD and was able to hook it up via serial to my other laptop and save all my stuff.

I'm at a loss of what to do, I have read some of the other posts and one of them suggested I reset the jumpers and replace the battery. I am not familiar with laptops, do they also have bios batteries and where might I find it inside the case?

Here are the specs:

I'm running Windows 7

Toshiba Satellite A135-S2266
Intel Celeron Processor
80 GB Hard Drive
2 GB RAM