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6. The system stops when the Windows
Possible cause
There is an error in the hardware or the OS is corrupted.
Action
1. Unplug the power cord and remove all USB devices and extension boards except for the keyboard and mouse.
Then, plug the power cord in again and start the equipment. (For details about removing extension boards, see
6.3.4 Installing and removing an extension board.)
2. If the symptom persists after step 1, the OS might be corrupted. If you have a recovery DVD, use the recovery
DVD to restore the system drive to its factory default settings.
NOTE
• Do not connect a USB device during OS startup, because the OS might not start normally.
• When you change screens during OS startup, the OS does not start normally in some CPU switching devices. If
you use a CPU switching device, sufficiently verify operation.
7. The system stops when a blue screen is displayed.
Possible cause
The equipment received an active remote shutdown signal.
Action
1. Take appropriate action by referring to 8.3 Suppressing Startup Upon Detection of a Serious Failure and 9.3
Bug Check Causes.
(2) Beeping sounds are generated.
a) One beep is generated.
Possible cause
This sound indicates a power-on. This is not an error.
b) Two or more beeps are generated.
Possible cause
A hardware error was detected.
Action
1. Check the information displayed by the digital LEDs for status indications, and then take appropriate action by
referring to 9.6.1 POST messages.
®
logo is displayed.
9-5
9. TROUBLESHOOTING
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