1. Login to your SolusVM Control Panel.
2. If you have multiple VPS, then select the appropriate one.
3. Scroll down, under the "settings" tab you can find APIC, ACPI, VNC or PAE. If you want to turn off VNC, then select the "Off" option from the Drop-Down menu under the VNC option.
4. After making any changes (on/off), reboot your VPS.