I'm not sure what I did, but I attempted to under volt the processor by what I thought was a tiny amount (1 out of 1000). Now the laptop won't boot. I've tried unplugging, removing the battery and holding the power button in for a minute, but still nothing. Any suggestions on resetting the BIOS? Edit: After speaking with Lenovo and my laptop being (barely) under warranty, they said I would need to send it in for a motherboard replacement. I come from more of the desktop world, so I'm used to being able to do a CMOS reset to correct my mistakes. I didn't realize that a mistake on this laptop was so destructive. Lesson learned.