HP Pavilion Dv4 5100 Entertainment Notebook Pc Series Manual

							Recovering the original system using HP Recovery Manager
HP Recovery Manager software allows you to repair or recover the computer to its original factory
state. 
What you need to know
●HP Recovery Manager recovers only software that was installed at the factory. For software not
provided with this computer, you must either download the software from the manufacturers
website or reinstall the software from the disc provided by the manufacturer.
●A system recovery should be used as a final attempt to correct computer issues. If you have not
already tried restore points (see 
Restoring to a previous restore point on page 80) and partial
restores (see 
Restoring specific files on page 80), try them before using HP Recovery Manager
to recover your system.
●A system recovery must be performed if the computer hard drive fails or if all attempts to correct
any functional computer issues fail.
●If the recovery media do not work, you can obtain recovery discs for your system from the HP
website.
Creating a backup using HP Recovery partition (select models only)
1.Access HP Recovery Manager in either of the following ways:
●Select Start > All Programs > Security and Protection > HP Recovery Manager > HP
Recovery Manager.
– or –
●Turn on or restart the computer, and then press f11 while the “F11 (System Recovery)”
message is displayed on the screen.
2.Click System Recovery in the HP Recovery Manager window.
3.Follow the on-screen instructions.
To restore, see 
Restoring specific files using HP Recovery Manager (select models only) on page 80.
Recovering using the recovery media
1.If possible, back up all personal files.
2.Insert the first recovery disc into the optical drive on your computer or an optional external
optical drive, and then restart the computer.
– or –
Insert the recovery flash drive into a USB port on your computer, and then restart the computer.
NOTE:If the computer does not automatically restart in the HP Recovery Manager, the
computer boot order needs to be changed.
3.Press f9 at system bootup.
4.Select the optical drive or the flash drive.
5.Follow the on-screen instructions.
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							Changing the computer boot order
To change the boot order for recovery discs:
1.Restart the computer.
2.Press esc while the computer is restarting, and then press f9 for boot options.
3.Select Internal CD/DVD ROM Drive from the boot options window.
To change the boot order for a recovery flash drive:
1.Insert the flash drive into a USB port.
2.Restart the computer.
3.Press esc while the computer is restarting, and then press f9 for boot options.
4.Select the flash drive from the boot options window.
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							12 Specifications
Input power
The power information in this section may be helpful if you plan to travel internationally with the
computer.
The computer operates on DC power, which can be supplied by an AC or a DC power source. The
AC power source must be rated at 100–240 V, 50–60 Hz. Although the computer can be powered
from a standalone DC power source, it should be powered only with an AC adapter or a DC power
source supplied and approved by HP for use with this computer.
The computer can operate on DC power within the following specifications. Operating voltage and
current varies by platform.
Input power Rating
Operating voltage and current 18.5 V @ 3.5 A or 19.5 V @ 3.33 A – 65 W
19 V @ 4.74 A or 19.5 V @ 4.62 A – 90 W
19.5 V @ 6.15 A – 120 W
DC plug of external HP power supply
NOTE:This product is designed for IT power systems in Norway with phase-to-phase voltage not
exceeding 240 V rms.
NOTE:The computer operating voltage and current can be found on the system regulatory label.
Input power 83 
						

							Operating environment
Factor Metric U.S.
Temperature
Operating5°C to 35°C41°F to 95°F
Nonoperating-20°C to 60°C-4°F to 140°F
Relative humidity (noncondensing)
Operating10% to 90%10% to 90%
Nonoperating5% to 95%5% to 95%
Maximum altitude (unpressurized)
Operating-15 m to 3,048 m-50 ft to 10,000 ft
Nonoperating-15 m to 12,192 m-50 ft to 40,000 ft
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							13 Troubleshooting and support
●Troubleshooting
●
Contacting customer support
85 
						

							Troubleshooting
Disc drive problems
If the disc tray fails to open normally, follow these steps:
1.Insert the end of a paper clip into the release access (1) in the front bezel of the drive.
2.Press in gently on the paper clip until the tray is released, and then pull out the tray (2) until it
stops.
3.Remove the disc (3) from the tray by gently pressing down on the spindle while lifting the outer
edges of the disc. Hold the disc by the edges and avoid touching the flat surfaces.
NOTE:If the tray is not fully accessible, tilt the disc carefully as you remove it.
4.Close the disc tray and place the disc in a protective case.
Wireless connection problems
Some possible causes for wireless connection problems include the following:
●Wireless device is not turned on.
●Wireless device is not installed correctly or has been disabled.
●Wireless device encountered interference from other devices.
●Wireless device or router hardware has failed.
NOTE:Wireless networking devices are included with select computer models only. If wireless
networking is not listed in the feature list on the side of the original computer package, you may add
wireless networking capability to the computer by purchasing a wireless networking device.
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							Cannot connect to a WLAN
If you have a problem connecting to a WLAN, confirm that the integrated WLAN device is turned on
and properly installed on your computer:
1.If the wireless light is off or amber, press the wireless button, wireless switch, or wireless key to
turn it on.
NOTE:If the wireless light is off and your turn it on, try connecting to the WLAN again. If that
does not work, follow the steps below.
2.Select Start > Control Panel > System and Security.
3.In the System area, click Device Manager.
4.Click the arrow next to Network adapters to expand the list and show all adapters.
5.Identify the WLAN device from the Network adapters list. The listing for a WLAN device may
include the term wireless, wireless LAN, WLAN, or 802.11.
If no WLAN device is listed, either your computer does not have an integrated WLAN device, or
the driver for the WLAN device is not properly installed.
For more information on troubleshooting WLANs, see the website links provided in Help and Support.
Cannot connect to a preferred network
You may not be able to connect to a preferred network because it is a security-enabled WLAN. You
must have the security code to connect to this type of WLAN. See the next section for additional
information.
If entering a security code is not the problem, you may have a corrupted WLAN connection. Many
times, Windows can automatically repair a corrupted WLAN connection.
●If there is a network status icon in the notification area, at the far right of the taskbar, right-click
the icon, and then click Troubleshoot problems.
Windows resets your network device and attempts to reconnect to one of the preferred
networks.
●If there is no network status icon in the notification area, follow these steps:
1. Start > Control Panel > Network and Internet > Network and Sharing Center.
2.Click Troubleshoot problems and select the network you wish to repair.
Current network security codes are unavailable
If you are prompted for a security code (or network key) or a name (SSID) when connecting to a
WLAN, the network is protected by security. You must have the current codes to make a connection
on a secure network. The SSID and security code are alphanumeric codes that you enter into your
computer to identify your computer to the network.
●For a network connected to your personal wireless router, review the router user guide for
instructions on setting up the same codes on both the router and the WLAN device.
●For a private network, such as a network in an office or at a public Internet chat room, contact
the network administrator to obtain the codes, and then enter the codes when prompted to do
so.
Troubleshooting 87 
						

							Some networks change the SSID or network keys used in their routers or access points on a
regular basis to improve security. You must change the corresponding code in your computer
accordingly.
If you are provided with new wireless network keys and SSID for a network, and if you have
previously connected to that network, follow the steps below to connect to the network:
1.Select Start > Control Panel > Network and Internet > Network and Sharing Center.
2.In the left panel, click Manage wireless networks.
A list showing the available WLANs is displayed. If you are in a hotspot where several WLANs
are active, several will be displayed.
3.Select the network in the list, right-click the network, and then click Properties.
NOTE:If the network you want is not listed, check with the network administrator to be sure
that the router or access point is operating.
4.Click the Security tab and enter the correct wireless encryption data into the Network security
key box.
5.Click OK to save these settings.
WLAN connection is very weak
If the connection is very weak, or if your computer cannot make a connection to a WLAN, minimize
interference from other devices, as follows:
●Move your computer closer to the wireless router or access point.
●Temporarily disconnect wireless devices such as a microwave, cordless phone, or cellular
phone to be sure that other wireless devices are not interfering.
If the connection does not improve, try forcing the device to reestablish all connection values:
1.Select Start > Control Panel > Network and Internet > Network and Sharing Center.
2.In the left panel, click Manage wireless networks.
A list showing the available WLANs is displayed. If you are in a hotspot where several WLANs
are active, several will be displayed.
3.Click a network, and then click Remove.
Cannot connect to the wireless router
If you are trying to connect to the wireless router and are unsuccessful, reset the wireless router by
removing power from the router for 10 to 15 seconds.
If the computer still cannot make a connection to a WLAN, restart the wireless router. For details, see
the router manufacturers instructions.
Network status icon is not displayed
If the network status icon is not displayed in the notification area after you configure the WLAN, the
software driver is either missing or corrupted. A Windows “Device not Found” error message may
also be displayed. The driver must be reinstalled.
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							Get the latest version of the WLAN device software and drivers for your computer from the HP
website at 
http://www.hp.com. If the WLAN device you are using was purchased separately, consult
the manufacturers website for the latest software.
To get the latest version of the WLAN device software for your computer, follow these steps:
1.Open your Internet browser.
2.For U.S. support, go to 
http://www.hp.com/go/contactHP. For worldwide support, go to http://
welcome.hp.com/country/us/en/wwcontact_us.html.
3.Click the option for software and driver downloads, and then type your computer model number
in the search box.
4.Press enter, and then follow the on-screen instructions.
NOTE:If the WLAN device you are using was purchased separately, consult the manufacturers
website for the latest software.
Audio problems
To check the audio functions on your computer, follow these steps:
1.Select Start > Control Panel > Hardware and Sound > Sound.
2.When the Sound window opens, click the Sounds tab. Under Program Events, select any sound
event, such as a beep or alarm, and click the Test button.
You should hear sound through the speakers or through connected headphones.
To check the recording functions on your computer, follow these steps:
1.Select Start > All Programs > Accessories > Sound Recorder.
2.Click Start Recording and speak into the microphone. Save the file to your desktop.
3.Open a multimedia program and play back the sound.
To confirm or change the audio settings on your computer, select Start > Control Panel > Hardware
and Sound > Sound.
Power management problems
Some possible causes for power management problems include the following:
●Low battery levels
●AC adapter problems
Resolving a low battery level
Resolving a low battery level when external power is available
●Connect an AC adapter.
●Connect an optional docking or expansion device.
●Connect an optional power adapter purchased as an accessory from HP.
Troubleshooting 89 
						

							Resolving a low battery level when no power source is available
●Initiate Hibernation.
●Save your work and shut down the computer.
Resolving a low battery level when the computer cannot exit Hibernation
When the computer lacks sufficient power to exit Hibernation, follow these steps:
1.Replace the discharged user-replaceable battery with a charged battery, or connect the AC
adapter to the computer and to external power.
2.Exit Hibernation by pressing the power button.
Troubleshooting an AC adapter
Test the AC adapter if the computer exhibits any of the following symptoms when it is connected to
AC power:
●The computer does not turn on.
●The display does not turn on.
●The power lights are off.
To test the AC adapter:
1.Shut down the computer.
2.Remove the battery from the computer.
3.Connect the AC adapter to the computer, and then plug it into an AC outlet.
4.Turn on the computer.
●If the power lights turn on, the AC adapter is working properly.
●If the power lights remain off, check the connection from the AC adapter to the computer
and the connection from the AC adapter to the AC outlet to make sure the connections are
secure.
●If the connections are secure and the power lights remain off, the AC adapter is not
functioning and should be replaced.
Contact customer support for information on obtaining a replacement AC power adapter.
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