Machine damage
Contact the dealer or manufacturer
No voice
Sound
card
drive
failure;
computer set to mute; speaker
problem
Check whether the sound card driver is
installed; check whether the volume of
the computer is mute; replace the
speaker
No internet access
Network
card
drive
failure;
network cable interface is not
contacted well
Check whether the driver of the network
card is installed; check whether the
network cable is connected (whether the
indicator light of the network interface is
on)
Incorrect network configuration
Set up the correct network configuration
Touch screen calibration method:
1. Select the touch screen calibration program of win7;
Open the control panel → hardware and
sound → Tablet PC settings → calibration screen → calibrate as prompted
2. Ask the supplier for touch screen calibration software
