Solved: How to hard reset Gigabyte gSmart MS800:  Press and hold Camera key and ....

Gigabyte gSmart MS800 soft reset

Press the button with stylus to soft reset your device.

Gigabyte gSmart MS800 hard reset

If the system still lags after rebooting, you will need to clean boot the device. To clean boot,
press and hold Camera key and Power Key at the same time for about 3 seconds and then
release. Your device will reset to factory defaults and reboot.

Note: When you perform a clean boot on this device, all your personalized settings,
information, and programs installed will be removed. The system will reset to factory defaults.