Now I will introduce you to backup and restore your windows 8 or 8.1. The way to restore windows 8 or 8.1 is same windows 7 that I posted "BACKUP WINDOWS WITHOUT THIRD-PARTY SOFTWARE PART II".
Step 1: Access to Control Panel:
Step 5: You can select save your image backup on Local partition or an other partition on your LAN network.
Step 8: Wait until it done and result like below:
You do samely Step 1 to Step 4 but now you select Recovery instead of System image backup:
Step 2: Now you download System image recovery disc for windows 8 or 8.1 from here and do like with windows 7 to restore. You can read my post here.