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G-2 Troubleshooting Without Diagnostics
Power Problems
This section identifies some quick checks for power–related problems.
Table G-1
Solutions for Power Problems
Problem Possible Solution
Computer will not turn on. Ensure that the computer is connected to a power source.
Cables to the external power source are unplugged. Ensure that cables
connecting the computer and the external source are plugged in properly.
A PCI or ISA card that has been installed is defective. Remove any adapter
card that was just installed.
Computer does not automatically display the date
and time.
The real-time clock (RTC) battery may need to be replaced. See Chapters 5
and 6 for replacement procedures.
Thermal Problems
This section identifies a thermal problem that could be related to the processor overheating.
Table G-2
Solutions for Thermal Problems
Problem Possible Solution
Computer screen frozen, the power supply fan
continues to run, and the power LED is illuminated.
1. Turn off the computer and let everything cool down.
2. Check to ensure that the air duct is installed and the processor is under
the flap (Pentium II minitower system only).
3. Check for 3 inches of clearance at the front and back of the computer.
4. Resume operation.
5. If lock-up continues, run diagnostics for total system.
6. Look for software or interrupt conflicts.
7. Replace the processor, if necessary. See Chapters 5 and 6 for
replacement procedures.