Solving processor problems
If you encounter processor problems, common causes and solutions are listed in the following table.
Poor performance is experienced.
Cause Solution
Processor is hot. 1. Make sure the airflow to the computer is not blocked.
2. Make sure the fans are connected and working properly
(some fans only operate when needed).
3. Make sure the processor heat sink is installed properly.
Power LED flashes Red three times, once every second, followed by a two second pause.
Cause Solution
Processor is not seated properly or not installed. 1. Check to see that the processor is present.
2. Reseat the processor.
Power LED flashes Red eleven times, once every second, followed by a two second pause.
Cause Solution
The current processor does not support a feature previously
enabled on this system.
1. Install a TXT (Trusted Execution Technology) capable
processor.
2. Disable TXT in the Computer Setup (F10) utility.
3. Reinstall the original processor.
Solving CD-ROM and DVD problems
If you encounter CD-ROM or DVD problems, see the common causes and solutions listed in the following
table or to the documentation that came with the optional device.
System will not boot from CD-ROM or DVD drive.
Cause Solution
The device is attached to a SATA port that has been hidden in the
Computer Setup utility.
Run the Computer Setup utility and ensure Device Available is
selected for the device's SATA port in Security > Device Security.
Removable Media Boot is disabled in the Computer Setup utility. Run the Computer Setup utility and enable booting to removable
media in Storage > Storage Options. Ensure CD-ROM is enabled
in Storage > Boot Order.
Network Boot is enabled in Computer Setup. Run the Computer Setup utility and disable Network Boot in
Security > Network Boot.
Non-bootable CD in drive. Try a bootable CD in the drive.
Boot order not correct. Run the Computer Setup utility and change boot sequence in
Storage > Boot Order.
138 Chapter 8 Troubleshooting without diagnostics ENWW
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