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Computer will not start.
Cause | Solution | |
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Wrong memory modules were used in the upgrade or | 1. | Review the documentation that came with the system to |
memory modules were installed in the wrong location. |
| determine if you are using the correct memory modules |
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| and to verify the proper installation. |
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| NOTE: DIMM1 or XMM1 must always be installed. On |
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| all computers except the USDT, DIMM1 must be installed |
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| before DIMM2, and DIMM3 must be installed before |
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| DIMM4. |
| 2. | Observe the beeps and LED lights on the front of the |
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| computer. Beeps and flashing LEDs are codes for specific |
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| problems. |
| 3. | If you still cannot resolve the issue, contact Customer |
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| Support. |
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Power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause | Solution | |
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Memory is installed incorrectly or is bad. | CAUTION: To avoid damage to the DIMMs or the system | |
| board, you must unplug the computer power cord before | |
| attempting to reseat, install, or remove a DIMM module. | |
| 1. | Reseat DIMMs. Power on the system. |
| 2. | Replace DIMMs one at a time to isolate the faulty |
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| module. |
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| NOTE: DIMM1 or XMM1 must always be installed. On |
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| all computers except the USDT, DIMM1 must be installed |
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| before DIMM2, and DIMM3 must be installed before |
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| DIMM4 |
| 3. | Replace |
| 4. | Replace the system board. |
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Power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps six times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause | Solution |
Graphics card (some models) is not seated properly or is bad, or system board is bad.
For systems with a graphics card:
1.Reseat the graphics card. Power on the system.
2.Replace the graphics card.
3.Replace the system board.
For systems with integrated graphics, replace the system board.
170 | Chapter 8 Troubleshooting Without Diagnostics |