QPress the power button, no response, no light on, the entire system is not poweA
Check whether the power input cable is connected well, whether the power outlet switch is open or not, and make sure that the power cord is in line.
Q2. The computer cannot start, the computer power light does not light or abnormaA
Just replace the OPS PC and test it ,if still can’t work, need to change the power supply and back card of the controller.
QUSB device cannot be usedA
（1）Check whether the USB device driver is installed; reinstall the drive or connect the USB device to other equipment and confirm whether it can be used. If not, replace the USB-HUB. （2） Recover the system if you confirm that the USB-HUB and USB devices
QKeyboard and visualizer can’t be usedA
Reinstall the software driver, re-connect; if the fault can not be resolved, then replace the keyboard, booth equipment.
QThere is no sound of the 2.4G wireless microphone, but the PC sound is normal.A
The microphone is on Mute mode, need to press the Mute button, it will work.
QMachine running slowly, cant install whiteboard software.A
Computer virus and need to restore the virus or restore the system, back-up the system.
QCan’t connect to Internet, there is sign “X”on the Lan port or can’t open pages.A
（1）Check if the network is normal. Use a laptop to test it. （2）Check if the network driver installed in the “Device management” of PC. （3）Check if the network setting correct. （4）Check if the browser install well, make sure no virus. （5）Restore the
QUSB device is not recognizedA
USB cable is not plugged in, loose or falling off, re-connected it ; USB-HUB board off or damaged, replace it; USB interface pin is damaged, directly replace the entire interface board
QThe computer does not bootA
If the controller starts normally but the PC can’t start,check if the PC cable is loose off, if the PC power cable is connected, re-plug the PC power cable.