Windows 7: Windows 7 won't start and f8 boot options do nothing

Restarting pc gives me an error report saying "windows failed to start. A recent hardware or software change might be the cause" this screen appears no matter what I do. 2 options also occur on this screen, 1st being restart windows which returns to the same screen again and 2nd which is to launch startup repair which freezes on a loading screen(I've left it for ~12 hours lol). Tapping f8 opens advanced boot options but safe mode and repair you computer do nothing..as in no options or change in screens after I click..(I can't get to factory restore image)...can anyone help? I can provide more info if needed. tldr; halp

Sounds like you need to replace the registry hives.

Have you got some kind of boot media?

None...boot media is OS CDs And stuff like that? I have nothing though..

"windows failed to start. A recent hardware or software change might be the cause"
=> There is more info when that error is on screen. Please give that info

"safe mode" really displays nothing, so nothing at all? Does it freeze or can you select another option then?
startup repair which freezes on a loading screen. Please explain EXACTLY what happens if you select "repair your computer".

"startup repair" and "repair your computer" are actually the same! But you say on freezes and one does NOTHING. Impossible I think. Please explain

Safe mode begins to load 3 files..system 32/config/system and 2 others .exe and .dll...the screen says please wait but nothing ever happens...If I hit repair your computer I get a white loading bar saying windows is loading files but the screen freezes..

I can access by BIOS aswell but dunno if that matters

I'm experiencing almost the exact same thing.

Do a startup repair Startup Repair
Does it find any errors? Are they repaired? Click on "view diagnostic results" (or something like that). Status 0x0 means no problem.