3 advanced troubleshooting – Dell Dimension 4550 User Manual

Page 5

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Contents

5

Keyboard Problems

. . . . . . . . . . . . . . . . . . . . . . . . .

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

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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

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58

3 Advanced Troubleshooting

Diagnostic Lights

. . . . . . . . . . . . . . . . . . . . . . . . . .

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

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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

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