|For the second part of the post.|
Sorry, never easy for users that don't have tech guys as neighbors or family members.
The best thing would be to have someone look at it, either locally or over the network. Might have to pay a local repair shop to try to fix it. I suspect it will cost more than it is worth.
The other choice might be to see if you have a recovery cd/dvd. When you bought it, it might have had a way to restore it to the way it was from the factory. Some companys use a F key when you start it up. Might say F10 recovery console or something like that. Be sure you read you owners manual before you start that. Otherwise re-post this question at the hardware forums.
Fixing it might take a while but could be done if you work at it step by step.
BE SURE to read this. If you have important data consider saving it to dvd or external hard drive before you start any repair.
"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10