Keyboard not working, Toshiba Satellite U50t-A-100

Hello,
Hi, I have Toshiba Satellite U50t-A-100. My keyboard just randomly stopped working yesterday. I have had it for a year and a half and unfortunately the warranty is only one year (had it already fixed once when still under warranty). I tried to fix it myself, tried several advices found on online forums as this seems to be a very frequent problem. I desperately need this to be fixed as I have a deadline for report cards and can't write them on I-pad... Anyone has any advice that would help fix the problem? I was also thinking about buying an external keyboard. I will never buy Toshiba products again ever and I feel like I just want to throw this one out of my window. Thanks
kate