Can someone please give me some advice on what to do.

First off I was downloading a video clip on my psp And it started up fine, and then I looked away and next thing I know it was switched off. I then tried to turn it on, and it wouldn't, so I took out the memory card and battery and left it for a while, and tried to turn it back on but it would only get in to recovery(after a couple of trys). So it was in recovery and and pressed "exit" and it started up like normal, then after a few minutes it did he same thing again. I have got in in recovery and will just leave it there in fear of a bricked psp! Is there such thing as a virus for psp? if so what do I do!!

I have a 1.50 with 3.10oea. Please help!