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HP PROBOOK 6440B User Manual

HP PROBOOK 6440B
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Cannot connect to a preferred network
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 Diagnose and repair from the menu.
Windows resets your network device and attempts to reconnect to one of the preferred networks.
If an “x” is superimposed over the network status icon, one or more of your WLAN or LAN drivers
are installed but the computer is not connected.
If there is no network status icon in the notification area, follow these steps:
1. Click Start and type network and sharing in the Start Search box.
2. From the list of search results, click Network and Sharing Center.
3. In the left pane, click Diagnose and repair.
The Network connections window is displayed, and Windows resets your network device and
attempts to reconnect to one of the preferred networks.
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.
To get the latest version of the WLAN device software for your computer, follow these steps:
1. Open your Internet browser and go to
http://www.hp.com/support.
2. Select your country or region.
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 manufacturer's Web
site for the latest software.
Current network security codes are unavailable
If you are prompted for a network key or an 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
network key 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.
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.
Troubleshooting wireless network problems 33

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HP PROBOOK 6440B Specifications

General IconGeneral
Bus typeDMI
SteppingC2
Tjunction105 °C
Processor cache3 MB
Processor cores2
System bus rate2.5 GT/s
Processor familyIntel® Core™ i5
Processor seriesIntel Core i5-400 Series
Processor socketBGA 1288
Processor threads4
Processor codenameArrandale
Processing Die size81 mm²
Processor frequency2.26 GHz
Processor cache typeSmart Cache
Processor lithography32 nm
Processor manufacturerIntel
Processor front side bus- MHz
PCI Express slots version2.0
Processor boost frequency2.53 GHz
Processor operating modes64-bit
ECC supported by processorNo
PCI Express configurations1x16
Thermal Design Power (TDP)35 W
CPU multiplier (bus/core ratio)17
Maximum number of PCI Express lanes16
Number of Processing Die Transistors382 M
Motherboard chipsetIntel® HM57 Express
HDD speed7200 RPM
HDD interfaceSATA II
Optical drive typeDVD Super Multi
Total storage capacity250 GB
LED backlightYes
Display diagonal- \
Display resolution1366 x 768 pixels
Native aspect ratio16:9
Memory slots2x SO-DIMM
Internal memory2 GB
Memory clock speed1333 MHz
Internal memory typeDDR3-SDRAM
Maximum internal memory- GB
Discrete graphics card model-
On-board graphics card modelIntel® HD Graphics
On-board graphics card base frequency500 MHz
On-board graphics card dynamic frequency (max)766 MHz
TypePC
Dimensions (WxDxH)30 x 340 x 240 mm
Wireless technologyWi-Fi
Intel segment taggingEnterprise
Compliance industry standardsIEEE 802.11 b/g/n
Networking typeGigabitEthernet, WLAN
Operating system installedWindows XP Professional
Charging port typeDC-in jack
Serial ports quantity0
USB 2.0 ports quantityUSB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Product colorBlack
Country of originChina
Processor codeSLBPM
Processor ARK ID43537
Processor package sizerPGA 37.5x 37.5, BGA 34x28 mm
Graphics & IMC lithography45 nm
Supported instruction setsSSE4.1, SSE4.2
Intel® Turbo Boost Technology1.0
Weight and Dimensions IconWeight and Dimensions
Depth340 mm
Width30 mm
Height240 mm
Weight2260 g

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