HP m700 manual Solving USB Problems, 20Troubleshooting

Page 59

Solving USB Problems

	Problem	Possible Cause	Solution
	External device	The operating system	Reduce the number of
	connected to a	limits external devices	connected external USB
	USB connector	connected by USB to two	devices to no more than
	does not work.	tiers which can include	two hubs on the first tier,
		no more than two hubs	and no more than one
		on the first tier and no	keyboard and one
		more than one keyboard	pointing device on the
		and one pointing device	first or second tier.
		on the first or second tier.
	External device	During startup, only two	Use the external device
	connected to	tiers are supported by the	only after Windows 95,
	USB connector	USB port. These tiers can	Windows 98, or
	does not work	include no more than two	Windows 2000
	during startup	hubs on the first tier and	Professional has loaded.
	(before	no more than one	Reduce the number of
	Windows 95,	keyboard and one	Reduce the number of
	Windows 95,	keyboard and one	connected external USB
	Windows 98, or	pointing device on the	connected external USB
	Windows 98, or	pointing device on the	devices to no more than
	Windows 2000	first or second tier.	devices to no more than
	Windows 2000	first or second tier.	two hubs on the first tier,
	Professional		two hubs on the first tier,
	Professional		and no more than one
	loads).		and no more than one
	loads).		keyboard and one
			keyboard and one
			pointing device on the
			first or second tier.
	External devices	An unpowered hub is	Use only powered hubs.
	in lower tiers do	connected to another	Make sure that all
	not work.	unpowered hub.	Make sure that all
	not work.	unpowered hub.	unpowered hubs are
			immediately preceded by
			powered hubs in the USB
			chain.

5-20Troubleshooting

COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED

Writer: Karen Williams Saved by: Karen Williams Saved date: 05/23/00 11:51 AM

Part Number: 168894-001 File name: cH05.doc

Image 59

Contents Getting Started & Troubleshooting Contents Iv Contents TroubleshootingChapter To connect a model with an AC Adapter 2Setting Up the ComputerSetting Up the Computer 4Setting Up the Computer Setting Up the Computer Fire, or damage to the equipment 6Setting Up the ComputerTaking a Look at the Computer Pointing Device ComponentsPointing Device Components Component Function2Taking a Look at the Computer Top ComponentsTop Components ComponentDescription Left Side ComponentsLeft Side Components Top Components Function4Taking a Look at the Computer Right Side ComponentsRight Side Components Component Description Front ComponentsFront Components 6Taking a Look at the Computer Rear Panel ComponentsRear Panel Components Bottom Components Bottom Components8Taking a Look at the Computer Additional Standard ComponentsAdditional Standard Components Using the Compaq Portable Product Reference Library CD-ROM Finding INFORMATION, UPDATES, and HelpSubscribing to the Compaq Support Software CD 2Finding Information, Updates, and HelpUpdating Your System Registering with Info MessengerFinding Information, Updates, and Help Downloading Software UpdatesInstalling Software Updates Installing a Downloaded SoftPaq 4Finding Information, Updates, and Help Installing a System ROMRestoring Software Installing the Retail Version of an Operating SystemPage Telephone Number Worldwide Telephone NumbersCountry Location Worldwide Telephone Numbers 8Finding Information, Updates, and HelpWorldwide Telephone Numbers Country Location Code 10Finding Information, Updates, and Help Center Fax Country Location Code Telephone Number 12Finding Information, Updates, and HelpCustomer Support +90 2163918430 /362 Fax 2163918428 Worldwide Telephone Numbers Country Location14Finding Information, Updates, and Help Selecting Computer Setup or Compaq Diagnostics Computer Setup Diagnostics UtilitiesSelect File!Save Changes and Exit, then press Enter. or Using Computer Setup2Computer Setup and Diagnostics Utilities Selecting from the File MenuSelecting from the Security Menu Computer Setup and Diagnostics UtilitiesReference Guide on the CD-ROM 4Computer Setup and Diagnostics UtilitiesSelecting from the Advanced Menu Selecting from the Advanced Menu Displaying System Information Using Compaq DiagnosticsRunning a Diagnostic Test 6Computer Setup and Diagnostics UtilitiesComputer Setup and Diagnostics Utilities Troubleshooting Troubleshooting2Troubleshooting Quick Solutions ChecklistProblem Possible Cause Solution Solving Audio Problems4Troubleshooting Solving Battery Problems 6Troubleshooting Solving CD Drive/DVD-ROM Drive Problems 8Troubleshooting Solving Diskette Drive/SuperDisk LS-120 Drive ProblemsSolving Hard Drive Problems 10Troubleshooting Solving Infrared ProblemsProblem Possible Cause Solving Infrared Problems Problem Possible Causes Solution Solving Keyboard/Numeric Keypad ProblemsSolving Modem Problems 14Troubleshooting Not connect at 16Troubleshooting Solving PC Card ProblemsProblem Possible Causes Storage PC 18Troubleshooting Solving Power ProblemsFn+F4 hotkey Solving Display Problems20Troubleshooting Solving USB ProblemsIndex Index2Index Index 4Index Index 6Index