HP dx7200 HP Compaq Business PC dx7200 MT Service Reference Guide, 1st edition - Page 199
Solving Processor Problems, Solving CD-ROM and DVD Problems, Problem, Cause, Solution, Security
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Troubleshooting Without Diagnostics Solving Processor Problems . Solving Processor Problems Problem Cause Poor performance is experienced. Processor is hot. Power LED flashes Red three times, once every second, followed by a two second pause, and the computer beeps three times. Beeps continue for five iterations after which the LED flashes will continue until the problem is resolved. Processor is not seated properly or not installed. Solution 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 heatsink is installed properly. 1. Check to see that the processor is present. 2. Reseat the processor. Solving CD-ROM and DVD Problems Solving CD-ROM and DVD Problems Problem Cause System will not boot from CD-ROM or DVD drive. Removable Media Boot is not enabled through the Computer Setup utility. Non-bootable CD in drive. Network Server Mode is enabled in Computer Setup. Boot order not correct. CD-ROM or DVD devices are not detected or driver is not loaded. Movie will not play in the DVD drive. Drive is not connected properly or not properly configured. Movie may be regionalized for a different country. Solution Run the Computer Setup utility and enable booting to removable media and verify boot order settings. Try a bootable CD in the drive. Run Computer Setup and disable Network Server Mode in Security > Password Options. Run Computer Setup and change boot sequence in Storage > Boot Order. 1. Reconnect power and data cables to the drive. 2. Install correct device driver. See the documentation that came with the DVD drive. Service Reference Guide, dx7200 390812-001 D-23