3 advanced troubleshooting – Dell Dimension 4550 User Manual
Page 5

Contents
5
Keyboard Problems
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48
Mouse Problems
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49
Network Problems
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50
Power Problems
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51
Printer Problems
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53
Scanner Problems
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54
Sound and Speaker Problems
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55
No sound from speakers
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55
No sound from headphones
. . . . . . . . . . . . . . . . . . .
56
Video and Monitor Problems
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57
If the screen is blank
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57
If the screen is difficult to read
. . . . . . . . . . . . . . . . .
58
3 Advanced Troubleshooting
Diagnostic Lights
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60
Dell Diagnostics
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62
When to Use the Dell Diagnostics
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62
Starting the Dell Diagnostics
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62
Drivers
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65
What Is a Driver?
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65
Identifying Drivers
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66
Reinstalling drivers
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66
Using System Restore
. . . . . . . . . . . . . . . . . . . . . . .
68
Creating a Restore Point
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68
Restoring the Computer to an Earlier Operating State
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68
Undoing the Last System Restore
. . . . . . . . . . . . . . . .
69
Resolving Software and Hardware Incompatibilities
. . . . . . .
70