4 Short beep System timer failure
5 Short beep CPU failure
6 Short beep Keyboard controller Gate A20 failure
7 Short beep Virtual mode exception error
8 Short beep Display memory read/write error
9 Short beep ROM BIOS checksum error
10 Short beep CMOS shutdown register read/write error
11 Short Beep Cache memory error
1l (long) - 3 Short beep Memory test failure (non fatal)
1l Long - 8 Short beep Display test failure (non fatal)
For 1, 2, and 3 beep errors try reseating the Computers memory to correct the problem. If reseating the memory fails, it is most likely that 1 or more memory modules are bad. For a 6-beep error, try a different keyboard to correct the problem or reseating the keyboard controller chip.
For an 8-beep error, try reseating your video card or try a different video card (if your computer has a separate video card). For 4, 5, 7, 9, and 10-beep errors, it is likely that you will need to have your motherboard repaired or replaced.
