In short, not good.
I would recomend taking the HD out and attempting to recover any files. Then you will have to do a fresh install of the operating system.
The best thing you can do at the moment is nothing. Dont try and play with it. You will only make things worse.
I would love to offer my skills, but i dont have the time. Can you afford to take it into a shop? Or do you have any kind geek friends? they work best
hope you get it sorted.