Mainboard KN800
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Chapter 4: Troubleshooting
Problem 1:
No power to the system. Power light does not illuminate. Fan inside power supply does not turn on.
Indicator lights on keyboard are not lit.
Causes:
1. Power cable is unplugged.
2. Defective power cable.
3. Power supply failure.
4. Faulty wall outlet; circuit breaker or fuse blown.
Solutions:
1. Make sure power cable is securely plugged in.
2. Replace cable.
3.Contact technical support.
4.Use different socket, repair outlet, reset circuit breaker or replace fuse.
Problem 2:
System inoperative. Keyboard lights are on, power indicator lights are lit, hard drive is active but system
seems “hung”
Causes: Memory DIMM is partially dislodged from the slot on the mainboard.
Solutions:
1. Power Down
2. Using even pressure on both ends of the DIMM, press down firmly until the module snaps into place.
Problem 3:
System does not boot from the hard disk drive but can be booted from the CD-ROM drive.
Causes:
1. Connector between hard drive and system board unplugged.
2. Damaged hard disk or disk controller.
3. Hard disk directory or FAT is corrupted.
Solutions:
1. Check the cable running from the disk to the disk controller board. Make sure both ends are securely
attached. Check the drive type in the standard CMOS setup.
2. Contact technical support.
3. Backing up the hard drive is extremely important. Make sure your periodically perform backups to avoid
untimely disk crashes.
