Try downloading a copy of Windows and reinstall using the key on bottom of your laptop. You may have to search for an OEM version, not sure which your key is for. This will only reinstall windows though, you will have to hunt for drivers but you won't have all the extra bloatware they put on for you, the way a computer should be :) Torrents are your best friend in this situation. I'm about to try on a Toshiba Satellite A105, I'll let you know which version works.
How Do I Restore Laptop To Orignal State Without Recovery Or Windows CD, But Have Windows Key On Bottom Of Laptop?
If you can log on to your windows you can recover it. You just have to go to the control panel and there you can recover it. You can also make recovery disks from there by your own. If windows is not opening properly then try to open it in Safe Mode and try the same.