Help my mac won't respond once booted

I have a first gen 13 inch MacBook aluminum. It was dropped on the corner a few months ago but has preformed fine ever since. I have been using it up until yesterday without a problem. Although yesterday I noticed the airport wireless icon was reporting and exclamation point icon and it was having trouble finding and connecting to networks my iPhone was connecting o without a problem. Today I boot up and the boot time is very slow and sometimes hangs. It takes 10 minutes to get to the login screen and when it does I can move the mouse but the keyboard won't respond. So I can't type my password to login. The mouse moves but when I click a button nothing happens. I booted I safe mode and off the os x disk with the same issue. However I used key commands to do that and selected a boot disk using the keyboard and the mouse to do that so I know the work. Has anyone experienced this or have any suggestions. Can I bypass my loginscreen somehow? I'm most concerned about my data and I plane to get a hard drive first thing tomorrow.