While getting rid of dual-booted Linux I tried recovering Windows 7's bootloader with EasyBCD. (one-click process described in this video)
However, something went wrong and now GRUB is gone as it should be, but Windows 7's bootloader probably wasn't recovered correctly. When I try to boot into Windows it gets stuck forever on the screen with the Windows logo. It seems to get stuck there even when booting from a Windows 7 repair USB I created.
When I try to boot Linux Mint from live USB it says
Kernel panic - not syncing: Out of memory and no killable processes...
drm_kms_helper: panic occurred, switching back to text console
I also tried booting Slitaz as a more lighweight distro but it can't load the desktop environment either.
Is there anything I can do at this point to boot into any OS?