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Unable to boot and power indicator light is not on
1.Checking power outlet 2.Change adapter 3.Check electric line from main board or change main board Change switch or the cable
Unable to boot and power indicator is on
1.Change Main board Pull RAM bank out and insert again, or change RAM bank
Able to boot and fail to access the operating system
1.Reinstall operation system, ensure all important data is kept safely. 2.Starting up in security mode, antivirus checking, or reinstall operation system. 3.Pull out hard disk and insert again 4.Reboot operating system Change new hard disk
Defective display
1.Change LCD 2.Change LCD 3.Screen line is broken, or BIOS setting is incorrect, or change LCD 4.Change LCD LCD or LCD backlight is defective, change LCD.
Defective touching ( Resistive touchscreen )
1.No touching drive, the wire connecting touchscreen with main board is defective, the control card of touchscreen or the internal USB is defective, or the touchscreen itself is defective. Check all possible reasons above one by one, then change accordingly. 2.Try the operation of 9 or 25 points linearity correction, if still cannot work, probably the control card or touchscreen is defective, need to change touchscreen 3.Try the operation of 9 or 25 points linearity correction, if still cannot work normally, probably the control card or touchscreen is defective, need to change touchscreen Change touchscreen
Defective touching ( Projected Capacitive touchscreen)
1.The wire connecting touchscreen with main board is defective, the control card of touchscreen or the internal USB is defective, or the Operation System is broken. Check all possible reasons above one by one, then change accordingly. 2.Change the control card, or change touch screen 3.Change touchscreen Change touchscreen