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HP Pavilion zt3100 HP Notebook Series - Troubleshooting - Page 55

USB Problems, USB device does not work, USB device does not work during startup

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Problems and Solutions USB Problems USB device does not work ■ If the device requires external power, be sure that it is plugged securely into an electrical outlet as well as into a USB connector on the notebook. ■ Verify that the device is functioning properly by connecting it to a USB connector on another system. ■ Verify with the device manufacturer that you are using the correct driver(s). ■ Use the Device Manager utility in your operating system to check for and resolve any resource conflicts. USB device does not work during startup Refer to your model-specific documentation for information about USB legacy support. (USB legacy support enables a USB device, such as an optional external keyboard or mouse, to function during startup, before Windows loads.) Troubleshooting 2-39

Section	Page
Contents	3
Help Is Available	7
Quick Solutions Checklist	8
Is the Notebook Receiving Adequate Power?	8
Is the Notebook Turned On?	8
Is the Notebook Overheated?	9
Is the System Unresponsive?	9
Is an External Device Not Working?	10
Is Software Functioning Abnormally?	11
Finding the Help You Need	13
Help from Your Notebook	13
Help from Documentation	13
Help from the World Wide Web	14
Help by Telephone	15
Preparing to Call Customer Support	15
Accessing Customer Support Telephone Numbers	16
Help from a Service Provider	16
Problems and Solutions	17
Before You Begin	17
Audio Problems	18
Sound is not audible	18
Sound does not record	18
Battery and Power Problems	19
Notebook does not turn on	19
Notebook turns off unexpectedly	19
Indicators are displaying a low-battery condition	20
Battery pack does not charge	21
Battery pack is warm after charging	21
Battery pack charge displays seem inaccurate	22
Battery pack run time is shorter than expected	23
Standby cannot be initiated	23
Hibernation cannot be initiated	24
CD or DVD Problems	25
CD or DVD drive is not recognized by the system	25
No alert sounds when a CD or DVD drive is inserted	26
Notebook cannot start up from a CD or DVD	26
Notebook cannot read a CD or DVD	26
DVD movie does not fill the screen	27
DVD play is erratic	27
Standby or Hibernation affects CD or DVD play	28
DVD region error code is displayed	28
Digital Memory Card or Memory Stick problems	29
Notebook does not accept a digital memory card or Memory Stick	29
Digital memory alerts are not audible	29
Notebook does not recognize a digital memory card or Memory Stick	30
Digital memory card or Memory Stick does not work and alerts are not audible	30
Display Problems	31
Display is blank	31
Desktop icons are too large or too small	32
Characters are dim or difficult to read	32
FireWire (IEEE 1394) Problems	33
FireWire device does not work	33
FireWire connector has only 4 pins	33
Game Problems	34
Game frequently stops responding or locksup	34
Game sounds are erratic	34
Hard Drive Problems	35
Primary hard drive cannot be accessed	35
Primary hard drive is not recognized	35
Secondary hard drive is not recognized	36
Notebook cannot start from a secondary harddrive	36
Infrared Communication Problems	37
Infrared link cannot be established	37
Notebook does not transmit or receive data	38
Standby is preventing infrared transmission	38
Internet Problems	39
Notebook cannot connect to the Internet	39
Internet buttons do not respond	39
Notebook cannot browse a selected Web site	39
Keyboard and Pointing Device Problems	40
Notebook keyboard keys stick or do not respond	40
Assorted keys are typing incorrect characters	40
Letter keys are typing numbers	40
Keypad does not work	41
Hotkeys do not work on an external keyboard	41
Pointer drifts	41
Pointer moves erratically as you type	41
Pointing stick does not work	42
TouchPad does not work	42
External mouse does not work	42
PS/2 scroll mouse does not work	43
USB keyboard or pointing device doesnotwork	43
Memory Problems	44
Insufficient memory message is displayed	44
New memory module does not increase memory	44
New memory module affects startup	44
Modem Problems	45
No dial tone is audible	45
Modem does not dial correctly	45
Modem dials correctly but does not connect	46
Modem sounds are not audible	46
Modem does not connect at highest speed	47
Characters are garbled or transfer rates areslow	47
Modem loses connection	47
Fax transmissions do not work	48
Message reports excessive line current	48
Network Problems	49
Notebook cannot connect to the network	49
Connection occurs, but network seems inactive	49
Some network resources are not available	50
Network connection is slow	50
No computers found in Network Neighborhood or Network Places	50
PC Card problems	51
PC Card alerts are not audible	51
PC Card does not work and alerts are not audible	51
Notebook does not recognize a PC Card	52
Network PC Card stops communicating	52
PC Card modem is not working	52
Television problems	53
S-Video jack has 7 pins	53
Television is blank	53
Temperature Problems	54
Notebook feels abnormally hot	54
Battery pack is warm after charging	54
USB Problems	55
USB device does not work	55
USB device does not work during startup	55
Wireless LAN (WLAN) Device Problems	56
Notebook cannot connect to wireless network	56
Notebook cannot access network resources	57
Connection breaks after 3 minutes	57
Notebook cannot connect to Internet when WEP is enabled on the access point	58
Rate indication in the Connection Status fluctuates	58
Throughput and connection range vary	59
Notebook cannot detect a Bluetooth device	59