Modem Troubleshooting
Cannot call out or receive calls.
Make sure the phone line is clear and operable by calling out with a telephone.
Double check that the parameters for baud, parity stop bits, etc.. have been set properly.
Check that the COM ports are matched between the hardware and the communications software
Check that you have the proper COM port [...]

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Computer Memory Troubleshooting
Parity Errors
• Parity errors indicate that memory is bad.
• First if the computer has memory expansion board, determine if the faulty chip is on the memory board or the motherboard.
• If the memory error came up during the RAM check it will stop at [...]

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You may have experienced having your computer intermittently hangs-up, or may re-boot itself for no apparent reason. This can be annoying, and can mean you have lost valuable work that you we in the process of creating.
If this has happened once, then your chances of explaining the cause are remote in the extreme. If you [...]

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The computer monitor (also called the screen, the monitor, the display, or the CRT) shows what you type on the keyboard and what the computer’s response is. Like a TV screen, the monitor usually has an on/off switch. Note, however, that on many monitors, the off position is marked with a 0 [...]

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