● Symptom
1. USB port on back side does not work.
2. USB device port does not work.
3. Wired network does not work.
● Possible cause
Video controller is defective.
● Troubleshooting method :
Replace the video controller.
● Symptom
FDI device does not work.
7.4.3 FDI device problem
● Possible cause
1. FDI interface card is defective.
2. Video controller is defective.
● Troubleshooting method :
1. Replace the FDI interface card. Check its operatio
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