My laptop is infected, and I can't open any applications or programs.

I was browsing facebook one day, When I get a warning from Google chrome ( using the newest Firefow browser) Saying the page could be potentially harmful to my computer. Being facebook, I exit out immediately, and try to get back on facebook. I get the messagae again. I try go to google.com, and get the same page again. I exited out of my browser, and I get a warning from mcaffee security system (I’m not currently subscribed, but was last year) Saying my pc has been infected. I try to open the security system from my desktop, but I get an error message saying It cannot be opened because the file is infected. This happed with every program I try to open. Until i come to internet explorer, which opens to a blank page, and when i try to ex out, It says it can’t be terminated because the file is infected.

What the heck is going on? I can’t do anything, I can’t use my virus scan to figure out which virus it is, I can’t use the security system to help me get rid of it, I can’t downloads any anti-virus software, I can’t even copy it from a flash drive!

Right now my laptop is all unplugged, turned off, battery is out. What can I do? I really can’t afford to wipe it clean, I have a years worth of really important documents on it. I also has passwords to my bank accounts and whatnot… Am i going to get hacked? Should i get some identity protection? I’m already planning to go to the banck tomorrow morning to stop any transactions with my accounts until further notice. I know i sound like I’m overreacting, but this computer is my life. Any and all advice is greatly appreciated.