Hi my problem doesnt have anything to do with this board but if anyone knows anything about computers please please help!

My SO was fiddling with the desktop on my computer and somehow caused it to just show a blue screen. Nothing else, no icons, no background, nothing. Well I know the computer is working because I can hear little pop ups but cant figure out how to get the picture back! Im gonna ask my uncle but thought Id ask anyone on here if they can help. Im really stressing about this because every single picture I have of Nicole is on this computer! There's like 750 of them and I didnt back them up on any cd yet

I dont want to lose all those memories. Does anyone know what I can do. Ive tried restarting it, unplugging, and switching monitors but nothing helps. Please help!