DELL PowerEdge R210 User Manual

Page of 144
Troubleshooting Your System
109
Troubleshooting Your System
Safety First—For You and Your System
 
CAUTION: 
Many repairs may only be done by a certified service technician. You 
should only perform troubleshooting and simple repairs as authorized in your 
product documentation, or as directed by the online or telephone service and 
support team. Damage due to servicing that is not authorized by Dell is not covered 
by your warranty. Read and follow the safety instructions that came with the 
product.
Troubleshooting System Startup Failure
If your system halts during startup prior to video output, especially after 
installing an operating system or reconfiguring your system’s hardware, check 
for the following conditions:
If you boot the system to the BIOS boot mode after installing an operating 
system from the UEFI Boot Manager, the system will hang. The reverse is 
also true. You must boot to the same boot mode in which you installed the 
operating system. See "Using the System Setup Program and UEFI Boot 
Manager" on page 37.
Invalid memory configurations could cause the system to halt at startup 
without any video output. See "System Memory" on page 79.
For all other startup issues, note the system messages that appear onscreen. 
See "System Messages" on page 21 for more information.
Troubleshooting External Connections
Ensure that all external cables are securely attached to the external 
connectors on your system before troubleshooting any external devices. See 
Figure 1-1 and Figure 1-2 for the front-panel and back-panel connectors on 
your system.
book.book  Page 109  Wednesday, August 12, 2009  4:51 PM