Intel Server Board SE7501HG2 Product Guide 
114
Verifying Proper Operation of Key System Lights 
As POST determines the system configuration, it tests for the presence of each mass storage device 
installed in the system.  As each device is checked, its activity light should turn on briefly.  Check 
for the following: 
! Does the diskette drive activity light turn on briefly?  If not, see “Diskette Drive Activity Light 
Does Not Light” on page 116. 
! If a second diskette drive is installed, does its activity light turn on briefly?  If not, see “Diskette 
Drive Activity Light Does Not Light” on page 116. 
Confirming Loading of the Operating System 
Once the system boots up, the operating system prompt appears on the screen.  The prompt varies 
according to the operating system.  If the operating system prompt does not appear, see “Initial 
System Startup” on page 111. 
Specific Problems and Corrective Actions 
This section provides possible solutions for these specific problems: 
•  Power light does not light 
•  There is no beep or an incorrect beep pattern 
•  No characters appear on screen 
•  Characters on the screen appear distorted or incorrect 
•  System cooling fans do not rotate 
•  Diskette drive activity light does not light 
•  CD-ROM drive activity light does not light 
•  There are problems with application software 
•  The bootable CD-ROM is not detected 
Try the solutions in the order given.  If you cannot correct the problem, contact your service 
representative or authorized dealer for help. 
Power Light Does Not Light 
Check the following: 
! Is the system operating normally?  If so, the power LED may be defective or the cable from the 
front panel to the server board is loose. 
! Are there other problems with the system?  If so, check the items listed under “System Cooling 
Fans Do Not Rotate Properly”. 
If all items are correct and problems persist, contact your service representative or authorized dealer 
for help.