If there
is no air blowing out of the power supply when you turn on the system,
it either needs to be plugged in or has an electrical problem. On most
PCs that are operating normally, the following sequence of events occur
after you power on the system:
a) the BIOS will run POST - several brief status and copyright messages
may appear on the screen;
b) a single short beep will indicate the end of POST (this feature may
be disabled on some systems);
c) you will hear disk access as the operating system is started up (most
PCs will attempt to boot from a floppy disk before proceeding to boot
from the hard disk);
d) the operating system will finish loading.
If your system does not successfully begin step c), it is likely that
one or more of the following has occurred:
#1 you did not hear the beep at the end of POST;
#2 you heard multiple beeps or saw an error message on the screen (see
the BIOS reference documents for information on interpreting error
codes);
#3 you did not see any messages printed on the screen.
Make a note of any of the above conditions, and provide the information
to your local dealer or a PC repair centre for assistance.
If your system
successfully completed steps a). and b), as described in the answer to
above question, the two most likely problems are that:
1. the operating system is corrupted - if your Setup hard disk values
are correct and the system still does not boot, try re-installing the
operating system from the disks that came with your computer. If you do
not have operating system manuals to instruct you in this, contact your
operating system manufacturer for assistance;
2. your hard disk may have crashed - if you have confirmed that the
hard-disk parameters in Setup are correct, and you are not successful in
re- installing the operating system, call the system Technical Support
or a PC repair store for help.
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