Could I just put my main pc windows key in and download a win 7 iso and repair it with a disc? would me putting my serial number in to download it do anything to my current windows?
Whilst yes you can install 10 or try to repair windows 7 by trying checkdisk. I would NOT upgrade to 10 and DON'T reinstall windows 7 before you get the data BACKED UP on a SEPARATE drive. You can do this by making a linux usb (ubuntu) and booting it from then copy the data to an external drive and then you can reinstall windows.
I cant install the program onto the pc im using micro xp, do u know if ubuntu would let me download it
Don't download the program. Just follow the steps once you made a bootable windows 7 usb. That program won't do anything it's just an advertisement of "hey look our program can do this but not really so here is the actual solution".
If Windows 7 won’t boot properly and doesn’t show you the Error Recovery screen, you can get into it manually. First, power the computer completely down. Next, turn it on and keep pressing the F8 key as it boots. You’ll see the Advanced Boot Options screen, which is where you would launch Safe Mode from. Select “Repair Your Computer” and run startup repair.