|You may be able to recover your files if the system will boot to a cd or even floppy. There are things called live cd's. They can be made from xp, or linux to boot your computer from. Some like netboot.me allow you to boot over the internet. Slow but works. Some friend may be able to make a bartsPE disk to help.|
Then you boot to something and save data off to somewhere. Usually a portable usb or shared drive.
Then you need to fix what you have. Not sure which way to go. sfc.exe or restore point or a repair. Just don't use any old xp cd to install. A repair works so that you keep your key.
"The era of big government is over," said Clinton 1996