PROBLEMS DURING THE POST

            Once all the required devices are properly connected to the main computer unit, you can switch on the computer. Start the computer by first switching on the AC main switch, power conditioning device (UPS, Stabilizer, e.t.c.) switch and the power-on switch provided on the front panel or the back of the main system unit

            Turn on the monitor; turn on the printer and all other peripherals connected to the computer system.

     When the main unit is turned on, you will hear the main unit power supply fan’s rotation sound. After some time,. The computer will produce a single beep sound to indicate that all its parts are working properly.

            Before producing this beep sound, computer does a POST (Power on Self Test) operation. During POST, Computer checks most of its parts to make sure that they are working normally.

            During the POST, if the computer finds that a part is not working as expected, then it will display some error message or produces some combination of beep sounds to inform that something is wrong with the computer.

            Problems that occur during the POST are usually caused by:

• ·         Incorrect hardware configuration
• ·         Incorrect installation of components
• ·         CMOS settings not set
• ·         Hardware failure

If you have a POST error, check the following:

• ·         Are all cables correctly connected and secured?
• ·         Are the configurations settings correct in setup for the devices you have installed? In particular, ensure the processor, memory and hard drive settings are correct?
• ·         Is a Keyboard attached?
• ·         Is a bootable hard disk (properly partitioned and formatted) installed?
• ·         Are switches and jumpers on the baseboard correct, if changed from the default setting?
• ·         Are all resource settings on add-in boards and peripheral devices set so that no conflicts exists (for example, two add-in boards sharing the same interrupt)?
• ·         Is the power supply set to the proper input voltage (110V – 120V – 240V)?
• ·         Are adapters boards and disk drives installed correctly?
• ·         Does the BIOS support the drive you have installed, and if so, are the parameters entered correctly?
• ·         Is a bootable floppy disk installed in drive A: ?
• ·         Is all memory SIMMS or DIMMS installed correctly? Try restarting them.
• ·         Is the Operating System properly installed?