Compaq Deskpro 4000N - Desktop PC, Maintenance & Service Manual

Page: 164 / 174

F-2 Troubleshooting Without Diagnostics
Power Problems
This section identifies some quick checks for power-related problems.
Table F-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 Chapter 5
for replacement procedures.