Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am using a Lenovo Ideapad Y480, and because of a corrupted dual boot, I am considering resetting the BIOS to "factory". However, what does this action do?

share|improve this question
up vote 1 down vote accepted

Resetting/modifiying a machines BIOS is not something that you should do on a whim. Although its not something that happens often, you can render your machine inoperable, even to the point where it can not be fixed. This does not happen often, but there is a small possibility it can happen.

Since you do not know what resetting the BIOS to factory settings does, I would highly recommend against it. If you are having an issue with the PC, try to fix it before attempting anything with the BIOS and talk to someone who knows about computers.

That being said, someone posted an answer that seems to relate to your issue specifically. Hopefully, your problem can be solved without having to modify the BIOS.

Now to answer your question about what resetting BIOS does. Most often, resetting the BIOS will reset the BIOS to the last saved configuration, or resets your BIOS to the BIOS version that shipped with the PC. Sometimes the latter can cause issues if settings were changed to take account for changes in hardware or OS after install.

share|improve this answer
Thanks, exactly what I needed. – Jimmt Feb 21 '13 at 23:39

This is what bios resetting does:

From what I understand this will not help your dual boot problem. I believe you will need to fix your system on the hard drive level. You will need to simply install a boot loader like grub or windows depending on what operating system you are attempting to boot.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.