1. Just Login Into Your Clientarea Account.
https://clientarea.cheaphosting.pk/clientarea.php
2. Click On Services Menu > My Services.
3. Click on your active vps service for which you are going to login in vnc.
4. Scroll down to vps below section to get vps management screen.
5. Click on Rebuild Button to Reinstall / Rebuild your vps server.
That's all.