I have vista windows home premium and my laptop

If your computer is not even loading Vista (another words, you can not logg in or anything) and you are getting this error message, there could be two possible things wrong.

One, your hard drive may have crashed. You will need to purchase a new one (unlikely but could happen)

Two, Microsoft Vista may be corrupt. This can be caused by viruses, etc.

A fix for this would be:

Note: You will lose everything on hard drive, pictures, music, etc.

Start the computer and press f4 at startup. Choose advanced options. Perform a factory restore. This will take aproximately 2-6 hours depending on your system. You will not need any disk.

Please let me know if you have any questions.