Dell OptiPlex 755 Quick Reference Manual page 84

I
installing parts
before you begin, 13, 61
recommended tools, 13
turning off your computer, 13
L
labels
Microsoft Windows, 7
Service Tag, 7
lights
diagnostic, 65-66
front of computer, 65-66
power, 28, 39
power button, 65
system, 65
M
motherboard. See system board
O
operating system
reinstalling, 9
Operating System CD, 9
84
Index
P
PC Restore, 75
power
light, 28, 39
power button light, 65
problems
beep codes, 70
diagnostic lights, 65-66
restore to previous state, 73
Product Information Guide, 6
R
regulatory information, 6
S
safety instructions, 6
Service Tag, 7
support website, 8
system board, 25, 35, 59
system lights, 65
System Restore, 73