Computer beeps four times at startup

  1. Four beeps indicates a bad checksum for the remainder of the boot ROM. The ROM (which is located on the logic board) is bad.
  2. If a RAM card is installed in the expansion slot, remove it and put in known-good and compatible RAM and restart.
  • If symptom does NOT repeat, replace RAM card.
  • If symptom repeats, replace logic board.

3. If no RAM card is installed, replace logic board.

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