My acer laptop wont start up windows 7

If system cannot startup in safe mode and trying the startup fix, then do a factory restore to put a fresh copy of W7 on your system, I beleiev its ALT-F10 when you see the Acer logo, this will wipe out all your files.

http://support.acer.com/acerpanam/desktop/0000/acer/asp...

We can't help you if you don't provide more information. Where does it stop loading? Any error message? BSOD? Does it power on at all? Can you hear fan spinning? Etc...

If it's a Windows problem you can boot in "safe mode" and use "system restore" from there.

If that doesn't work then you can use your recovery cd (or hidden recovery partition) and reinstall Windows, but that would be destructive in the sense you will loose any data that was on the laptop.

the exact same thing happens to me except it restarts on everything i try to open it on like start up repair on safe mode or anything