Need some serious help please!

Hello there.

I have a awful situation going on on my second PC. I clicked on a file by accident in my downloads folder from years ago and the screen went withe with nothing on it except my mouse cursor (which I can move). It is not frozen because I can still hear stuff like dvd's playing in the background if I put them in.

So this happens everytime now when I start my computer. I did attempt to start up in standard safe mode in order to do a system restore, but it just automatically restarts my PC for some reason so I can't even do that.

However, the other two safe modes work but I don't know anything about computers to try and fix it from there. To make matters worse, I don't have a windows disk as it is a second hand PC and quite old (only used for browsing the internet and watching videos) and all other options I found on the internet I can't do as I cannot access either safe mode or 'normal' mode.

Can this even be fixed? Can someone help please? Thanks in advance

Wondering, is it a black screen with mouse or your desktop background with mouse?

Okay so I tried all those methods you suggested twice and now it restarts when I load safe mode and with networking so I can't even use those.

And no its a white screen I get if I boot up normally.

Did you try a clean startup? Troubleshoot Application Conflicts by Performing a Clean Startup

Do you get Context Menu if you right click?

I can't get on to do a clean startup. And no it doesn't

Try loading Last Known Good Configuration in F8 menu.

If not, see Troubleshooting Windows 7 Failure to Boot for what you can do.

Yep. Tried both of your suggestions. They both didn't work. I think its beyond repair at this point