Hello asharp03 Welcome to the Seven Forums!
When looking up the specifications for that model seen at
Toshiba Satellite L505-ES5018 Laptop the mention of a Toshiba Recovery Disk Creator is included in the prepackaged software. That's listed under "Software, Support and Security>Software on the page there. Or you could order one through Toshiba for a price.
That should be able to reinstall Windows back to factory if you can still use that option. Another would be borrowing another 64bit Home Premium disk but still enter the product key found on the sticker attached to the bottom of the laptop itself to most likely end up seeing a clean install.
Lately I ended seeing that done on to see a clean install of Vista on an older Satellite A205 model. If you are unable to perform any further repairs to see 7 running normal again these would be the first options to consider.
The Recovery Disk Creator option would be the first thought however since that would solve the repair/reinstall situation as well as provide a reocvery disk.