1. Discharge the AC, then reconnect the adaptor again 2. Check if the power cable is loose or not 3. Replace the adaptor and try again 4. Disconnect all the peripherals then try again 5. Clear the CMOS on the mainboard and try again If all above methods fail, the main board could be faulty and needs to be replaced

Press F2 to access BIOS. Check whether can you can enter BIOS or not. If you can't enter BIOS, then mainboard is faulty. If you can access the BIOS, then checking following: 1. Check the information in the BIOS and see if the hard disk is connected 2. Check if the RAM is working or faulty 3. Reinstall the OS with the relevant drivers and try again 4. Replace the HDD cable 5. Replace the HDD or other storage device If all above methods fail, the main board could be faulty and needs to be replaced

1. Reinstall the correct touch driver from the CD provided 2. Check if the touch controller is working or not 3. Set the BIOS parameter to the default setting 4. Check if the touchscreen is faulty If all above methods fail, the main board could be faulty and needs to be replaced

1. Access the control panel 2. Go to Tablet PC settings 3. Click the Setup button 4. Follow the prompts to touch the operating screen to identify as the touch display

1. Set the BIOS parameters to the default setting 2. Check whether RAM is faulty or not 3. Replace the main operating display cable (LVDS cable) If all above methods fail, the main board could be faulty and needs to be replaced

1. Check if the peripheral driver is corresponding or not 2. Check the port setting to see if it is correct or if there is a conflict 3. Reconnect the peripheral device 4. Review the user manual of the POS peripheral product If all above methods fail, the peripheral module could be faulty and needs to be replaced

1. Check if the VFD driver (such as OPOS) is corresponding or not 2. Check the VFD COM port setting (voltage need set to 5V; The COM port and baud rate needs to be set as per the user manual ) to see if it is correct or if there is a conflict 3. Reconnect the peripheral device 4. Review the user manual of the POS peripheral product If all above methods fail, the peripheral module could be faulty and needs to be replaced

1. Check if the card works or not 2. Check if the MSR driver is corresponding or not 3. Check the MSR driver setting to see if it is correct or if there is a conflict 4. Reconnect the peripheral device 5. Review the user manual of the POS peripheral product If all above methods fail, the peripheral module could be faulty and needs to be replaced

1. Check if the RFID card is corresponding type or not (M1or MCPU type, 13.56Mhz) 2. Check the RFID utility setting to see if it is correct or if there is a conflict 3. Reconnect the peripheral device 4. Review the user manual of the POS peripheral product If all above methods fail, the peripheral module could be faulty and needs to be replaced

1. Check if the cash drawer is 24V or not 2. Check if the cash drawer driver is corresponding or not 3. Check the cash drawer driver setting to see if it is correct or if there is a conflict 4. Reconnect the peripheral device 5. Review the user manual of the POS peripheral product If all above methods fail, the peripheral module could be faulty and needs to be replaced

1. Check if the Wi-Fi module is installed correctly or not 2. Check if the Wi-Fi module driver is corresponding or not 3. Check the Wi-Fi module antenna is connected well or not 4. Reconnect the peripheral device 5. Review the user manual of the POS peripheral product If all above methods fail, the peripheral module could be faulty and needs to be replaced

1. Check if the printer module is installed correctly or not 2. Check if the printer module driver is corresponding or not 3. Check the printer port settings is correct or not 4. Power off the printer and press feed button and power button to let it self-test print; if it prints, then printer should be working, if it doesn't print, then printer could be faulty 5. Reconnect the peripheral device 6. Review the user manual of the POS peripheral product If all above methods fail, the peripheral module could be faulty and needs to be replaced

1. Check if the scanner module is installed correctly or not 2. Check if the scanner module driver is corresponding or not 3. Check the scanner port settings is correct or not 4. Reconnect the peripheral device 5. Review the user manual of the POS peripheral product If all above methods fail, the peripheral module could be faulty and needs to be replaced