Problems After The System Has Been Running Correctly - NEC POWERMATE PRO150 Manual

Problems After the System Has Been Running
Correctly
After the system hardware and software have been running correctly,
problems often indicate equipment failure. Go through the checklist below
to see if the situation is one that may be easily corrected.
If the problem recurs after you have checked and corrected all of these
items, refer to the troubleshooting procedures (see "Troubleshooting
Procedure" in this chapter).
___ If you are running the software from a diskette, try using a new copy.
___ If you are running the software from a hard disk, try running it from a
diskette. If the software runs correctly, there could be a problem with
the copy on the hard disk. Reinstall the software on the hard disk and
try again. Make sure all the necessary files are installed.
___ Try clearing CMOS RAM (Chapter 5) and running Setup (Chapter 3).
___ If the problems are intermittent, there could be a loose cable, dirt in the
keyboard (if keyboard input is incorrect), a marginal power supply, or
other random component failures.
___ A transient voltage spike, power outage, or brownout could have
occurred. Symptoms of voltage spikes include a flickering video
display, unexpected system reboots, and the system not responding to
user commands. Exit the application you are running, reboot the
system, and try again.
___ Voltage spikes can occasionally cause the heads of the disk drive to
contact the disk. This can corrupt or destroy data files. If you are
experiencing voltage spikes on the power line, install a surge suppresser
between the power outlet and the system power cord.
___ Try reseating the SIMMs.
___ If the fan fails, the CPU can overheat. If the CPU's thermal sensor
engages, it will shut the power supply and system down to protect them
from permanent damage. Wait 15 minutes for the system to cool, then
switch the power on again. If the system does not successfully power
up, make sure the power supply fan is blowing cool air onto the CPU
heatsink.
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