POST Beep Codes                                         Faxback Doc. # 3999

When you restart the computer, it performs Power On System Test (POST),
during which it checks and initializes the system's internal components.
If a serious error occurs, the computer does not display a message but
emits a series of long and short beeps instead.  The series always starts
with three short beeps, followed by a series of long beeps, followed by
another series of short beeps.  The number of long beeps within the series
indicates which components caused an error.  More than one component can
cause an error at the same time.

The table below lists the codes by the number of the long beeps in the
series.  If you hear a beep code, record the number of beeps, and contact
your Radio Shack store or participating dealer.

           Long
           Beeps*        Check this Component

           1             Processor
           2             Flash BIOS loader
           3             System board
           4             System board
           5             SIMM memory
           6             Integrated VGA or video adapter
           7             Expansion options

           * The number of short beeps does not matter
             in determining the component to check.

(JEJ-12/15/94)