Hi everyone!

It has been now several months that nearly every day, my laptop suddenly stops working at some time, and the only thing that I can do is to brutally shut it down and turn it on again. It is getting every day worse and worse, sometimes, after I shut it down brutally, I try to turn it on again and it won't start, or maybe it starts but after a few seconds it shuts down again. It is really hard to work like this, because I never know when it is going to happen again, and I always have to save everything on a external memory..

I have no idea of what kind of problem could it be, whether hardware or software, or maybe its a virus...Have you got any idea how to solve this problem? 

Thanks a lot!

Cristina