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HP ProBook 4420s Support Question

HP ProBook 4420s Support Question

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Question posted by bappa4dinhat on January 16th, 2015

Hp Laptop 4420s Switch On And Autometiculy Stop. What Is Problem!

hp laptop 4420s switch on only fan rottetion and autometiculy stop. what is problem!

Current Answers

Answer #1: Posted by TheWiz on January 17th, 2015 7:49 AM
This answer was accepted by the poster of the original question.
TheWiz

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October 13th, 2011

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This could be a number of things including the motherboard, CPU, or RAM. I recommend bringing it to a local repair shop to have them look at it.

Answer #2: Posted by hzplj9 on January 17th, 2015 10:28 AM
hzplj9

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June 25th, 2012

Points: 4,869,300
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Another issue could be that the outlet for the fan is clogged and the unit is going into overheat. It seems to be a common issue when used on the lap in bed. Check that the grill area is clear. Once the error occurs it will stop quicker everytime you start up until the issue is resolved. However if you are technically challenged then a visit to an engineer will be needed. Check out the HP link:

https://support.hp.com/us-en?openCLC=true

Related HP ProBook 4420s Manual Pages

End User License Agreement - Page 1

... to a separate license agreement between (a) you shall be governed You may accompany the HP Product. HP and its online documentation. d. Reservation of this EULA, all terms and conditions of...Rights. Notwithstanding the terms and conditions of this EULA: a. BY purposes of the HP Product. The term "Software Product" means computer software and may make archival or ...
End User License Agreement - Page 2

... related to the The transfer may not be licensed for the original Software Product identified by HP as eligible for which the recovery solution was originally purchased. b. This EULA will prevail.... commercial timesharing or bureau use technical information you may only be governed by HP unless HP provides other terms along with /for the upgrade. Any transfer must include ...
End User License Agreement - Page 3

...consequential damages, so the above disclaimer may not apply to you in its suppliers under HP's standard commercial license. 12. U.S. DISCLAIMER OF WARRANTIES. GOVERNMENT CUSTOMERS. Government under any... Documentation, and Technical Data for the Software Product or U.S. $5.00. Software Product. HP agrees not to use this EULA and your exclusive remedy for any of the United ...
End User License Agreement - Page 4

... or written communications, proposals and representations with respect to the Software Product or any HP policies or programs for support services conflict with the terms of this EULA, the... is governed by this EULA shall control. © 2003 Hewlett-Packard Development Company, L.P. HP shall not be construed as constituting an additional warranty. 13. You represent that you are set...
PERJANJIAN LISENSI PENGGUNA-AKHIR (Indonesia) - Page 4

...maka yang berlaku adalah ketentuan EULA ini © 2003 Hewlett-Packard Development Company, L.P. HP shall not be trademarks of their respective companies. Rev. 06/04 355096-BW1 The ...is subject to change without notice. All other product names mentioned herein may be liable for HP products and services are set forth in the express warranty statements accompanying such products and services ...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 1

... disassembly procedures. It provides comprehensive information on identifying computer features, components, and spare parts; troubleshooting computer problems; HP ProBook 4320s Notebook PC HP ProBook 4321s Notebook PC HP ProBook 4420s Notebook PC HP ProBook 4421s Notebook PC Maintenance and Service Guide SUMMARY This guide is a troubleshooting reference used for maintaining and servicing the...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 2

.... The information contained herein is a trademark owned by Hewlett-Packard Company under license. HP shall not be construed as constituting an additional warranty. SD Logo is a trademark of... express warranty statements accompanying such products and services. Nothing herein should be liable for HP products and services are set forth in the United States and other countries. First ...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 9

...; ● 33.8-cm (13.3-in) HD (1366×768 resolution) √ √ 1 1 Product description Category Product Name Processors Chipsets Graphics Panels Description HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA Discrete UMA Discrete HP ProBook 4320s Notebook PC √ √ NOTE: Discrete not for use in the People's Republic of China.
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 10

...-MB × 1) ● 2048-MB total system memory (1024-MB × 2, dual channel) ● 1024-MB total system memory (1024-MB × 1) HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA Discrete UMA Discrete √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 11

...: ● 500-GB, 7200-rpm ● 320-GB, 7200-rpm ● 250-GB, 7200-rpm HP 3D DriveGuard (not available on Linux) Fixed 12.7-mm (0.50-in Brazil Modem cable not included HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA Discrete UMA Discrete √ √ √ √ √ √ √ √ √ √...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 12

Category Ethernet Wireless External media cards Ports Description HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA Discrete UMA Discrete Supports no modem option √ √ √ √ 10/100/1000 Ethernet network interface card (NIC) √ √ √ √ ...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 13

Category Description HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA Discrete UMA Discrete USB 2.0 (3) √ √ √ √ Combo eSATA/USB 2.0 (1) √ √ √ √ HDMI √ √ √ √ VGA (Dsub 15-...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 14

...8730; √ √ 6 Chapter 1 Product description EDGI (available for Argentina, Brazil - English, Brazil, Latin America, Latin America - Category Description HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA Discrete UMA Discrete Windows 7 Starter with Office 2007 Ready (excludes Japan) √ √ √ √ Windows 7 Starter...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 15

... Windows 7 Home Premium 32 Windows 7 Home Basic 32 Windows 7 Starter Windows Vista Business 32 Windows Vista Home Basic 32 Windows XP Professional HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA Discrete UMA Discrete √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 16

Category Serviceability Description HP ProBook 4320s HP ProBook4 320s / 4321s HP ProBook 4420s HP ProBook 4421s UMA Discrete UMA Discrete Microsoft Office Ready DVD √ √ √ √ DRDVD Windows 7 Home Premium/Windows 7 √ √ √ √ Professional DRDVD Windows 7 ...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 20

... to exit Standby. ● When the computer is in this section. Buttons, speakers, switches, and fingerprint reader (select models only) NOTE: Your computer may look slightly different from the... illustration in Hibernation, press the button briefly to exit Hibernation. If the computer has stopped responding and Windows® shutdown procedures are ineffective, press and hold the power button...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 111

...; IDE (Integrated Drive Electronics) ● Enable/disable HP QuickLook. ● Enable/disable HP QuickLook preboot authentication on HP QuickLook boot. ● Enable/disable HP QuickWeb. ● Enable/disable HP QuickWeb: Write Protect (disabled by default). Select Device configurations To do this ● Enable Fn Key Switch ● Enable/disable USB legacy support. Computer Setup...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 137

...starting correctly. ● f11 recovery tools: You can also use Windows Startup Repair to fix problems that might prevent Windows from the backup used for these steps: 1. Follow the on the... information, refer to Help and Support for the presence of the Windows partition and the HP Recovery partition. If possible, check for more information. Restart the computer, and then press...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 159

...external monitor port pin assignments 136 external monitor port, identifying 16 F f11 recovery 130 fan removal 74 spare part number 25, 74 feet locations 48 spare part number 48 ...sink removal 74 spare part number 26, 74 HP Mobile Broadband Module spare part number 36 HP QuickLook 2 110 HP SpareKey enrollment 108 I internal display switch, identifying 12, 18 internal microphone, identifying 18...
HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Maintenance and Service Guide - Page 161

... 108 Disk Sanitizer 108 DriveLock 108 HP Sparekey 108 HP Sparekey enrollment 108 password policy 108 ... 124 start-up test 109 static-shielding materials 47 stringent security 114 switch cover removal 51 spare part number 23, 51 system board removal 93...110, 116 system date and time 100, 107 System Diagnostics menu 109 system fan 103, 110, 116 system IDs 108 system information 99, 107, 113 system...

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