Yesterday, while editing a video, my system got overheated and shut down.. When restarting the laptop, I noticed my main system fan had stopped spinning. And, I had lost an hour of editing. I re-edited my video, but just after saving (luckily!!) it shut down again due to overheating. But now, everytime I try saving the project as a real movie,  it shuts down at about 80%, again due to overheating.

I copied the wlmp. File and all other used files to an USB stick, to save it on my sisters' laptop. But is doesnt't work:((

all I get is black video, no music attatched and such:(( also with yellow triangles in it...

I know I need to get my computer fixed, but this is very important!!:(

how can I solve this?? 

I really neeed your help, I have to show it this thursday!!:'( the grade counts for 25% exam:((