You say you have no disks - is there a recovery partition on there? If there is, then a restore will leave you with the windoze operating system and nothing else. If no partition, you'll have to borrow a disk of the same variety as the installed OS to do a full re-instal. If you can't borrow a disk, you'll have to buy one.
Honor 5X review: Hands-on with the new budget phone from Hauwei's young brand