As you confirmed, windows stable till the login page in safe mode but not in normal mode. in this case probably problem seems from corrupted bootmgr, to fix this perform some troubleshooting.
Run "chkdsk /f" command in command prompt | second, run startup repair by pressing f8 key.
Hi,
I'm in a situation where I have to delete my laptop HDD completly and reinstall windows. But this laptop came with preinstalled and prevaricated windows 7 pro.
I'm not sure how I can reactivate new windows after installation.