Question about HP iPAQ H4150 Pocket PC

Open Question

IPAQ h4150 odd symptoms. where should I look?

This is a sad story. I dropped my wonderful h4150 down three flights of concrete steps - and it slipped out of its case en route. (Whoever tells you a feather and a hammer should accelerate at the same speed are lying!). Amazingly it still worked - the bottom 1cm of the display was completely clear and the backlight flickerd like Scotty was rotating the frequencies in the engine room - still I managed to get everything backed up and sent it off (for approximately the cost of a second hand one! doh!). It came back with a new display -upon which i could not draw straight lines - it was like there was pulse interference. I sent it back and it returned fixed. Phew. Four weeks later it suddenly hard reset itself. eep! Its been doing it ever since. Basically I can initiate a hard reset and it boots fine. I can reload my backup file. I can use activesinch to load whatever software I want. If I put it in its cradle it sits there happily on or off. If I switch it on and pick it up, its still FINE .....BUT if I either remove it from its cradle whilst swtiched off OR switch it off out of its cradle when I try and switch it on the logo appears, no backlight, and the 'im loading after a hard reset' horizontal line appears. When it reaches the far side, it stops. No backlight. No boot up. Still logo on screen. Wont switch off. But will hard-reset. I tried a new Li-ion. Just the same. Ideas? Im hoping its mechanical - but I have no idea really... I cant see how it only happens on boot up out of the cradle? :( Carl in North Wales GW0TQM

Posted by on

6 Suggested Answers

  • 8 Answers

SOURCE: HP Ipaq rx 1955 screen problem

Hello, Sorry to hear that,and be the bearer of bad news, but it sounds like a bad screen or a screen going bad. Bob

Posted on Aug 10, 2007

  • 198 Answers

SOURCE: Ipaq 4155 wont turn on, dont charge, dont anything, is totally death


I had some similar experiences with these ipaq's when I was working in a specialised service center. I'll try to give some help or tips through the internet, altrough if i could have seen or diagnosticate these pda's myself it would have been more easier. First of all these problems have 2 main causes. Most of the pda's comply with one of them, it is very rare that a pda will develop this problem by having both causes.
The first cause is the hardware one. A component called the main voltage convertor is broken. It's a small chip that uses the voltage given by the main battery to convert it's value to various tensions required by some of the components on the pda's main board. If some sub-parts of this chip fails to work, the result will appear as the problem you face, In this case there isn't much to do. Most service centers will replace the whole mainboard because that particular chip is very hard to find as a replacement and difficult to desolder from the board.
The second cause could be a major firmware / ROM memory corruption. These things can happen out from nowhere. In my time working for service centers I've tried to isolate a pattern for this problem but without much succes. However it seems that most of these problem tend to appear durring charging cicles due to power spikes or drops on the main AC voltage supplied to the charger. This is only a supposition, I'm not sure yet on this cause. What to do here? Well this problems are fixable but first of all you must be sure that this is a software problem, not a hardware one. So let's diagnosticate some things.
Try to charge the pda. Ignore any lights or beeps or whatever your pda is showing on the screen. As long as the charger is connected the charging process is based on the most primary charging circuits on the pda's motherboard. If the pda is not charging or cannot hold any charge (when you unplug it the screen fades away or it simply doesn't do anything else) maybe that circuit is broken (this is a a sign of serious hardware problems ) or maybe the battery is to old/weak. Batteries don't die out of nowhere, if you remember your pda to work and have some 2-3 hours of standby time it's imposible that now, suddently the battery has drained out so much that even if charged it can't hold out at least 30 min.
So we will assume that you charged the pda for at least 2-3 hours and you see some sign that the battery is working. The next step is crucial. TRY TO PUT THE PDA IN BOOTLOADER MODE. You will achieve this by pressing (and keep them pressed!) the following buttons : power, the far left and right buttons near the control pad (joystick or whatever some people call it) and reset button. You may need another person to help you press these buttons. the order should be the following (first power, then the 2 keys, then reset button for as long as it takes to enter bootloader mode). YOU SHOULD SEE A WHITE SCREEN WITH THE HP LOGO.

If your pda fails to do that, there is nothing more you can do to restore it in a DIY fashion. Probably the bootloader is corrupted or you have a hardware fault. Only a specialised HP service center can help you now. In most cases this will end up with a motherboard replacement.
If your pda does that, then there is a chance to fix it. We will need to probe the bootloader for direct data acces. This is needed for having the ROM memory (and operating system) rewritten. A small program called Mtty will be required to access the bootloader via an usb link.

Please make this tests first and then reply with your results. If anyone of you is in situation #2 there may be a chance.

Posted on Feb 10, 2008

  • 42 Answers

SOURCE: ipaq 4700 will not recover

Posted on Dec 24, 2008

  • 1223 Answers

SOURCE: How do i do a hard reset on HP ipaq X11-21204?

u have given a wrong Model number this is not a model number infact a part number pls try to find the correct model number from HP site thru photo identification if u dont find ur model other wise i am providing u detail below to try the hard reset on various series of HP IPAQS kindly be sure that ur ALL DATA WILL BE ERASED pls rate me FIXYA if i fixed ur problem

How to Perform a Hard Reset on an HP iPAQ

Performing a hard reset on an HP iPAQ is relatively easy, but is a dramatic step in the management of your handheld organizer. A hard reset will completely clear the memory of your device and restore it to the state you received it in from the factory. A soft reset, on the other hand, simply closes running programs and restarts your pocket PC.

Difficulty: Moderately Easy
Read the owner’s manual. If you don’t have to do a hard reset, you shouldn’t, and you definitely don’t want to do one by accident. So familiarize yourself with the hard reset protocol offered in the manual.
Make sure you want to clear all personal settings, saved data and personal files from your PDA. If there are files you wish to retain, save them to a removable disk, or send them to your computer’s hard drive to be retrieved at a later date before performing a hard reset.
For the HP iPAQ h1900 series, hold down the power button while you use your stylus to hold down the reset button (on the left side of the iPAQ). Hold these buttons for a few seconds until the screen fades to black.
For the HP iPAQ h2000 Series, press down on the far left and right buttons (calendar and iTask, respectively). While you do this, press and hold the reset button on the back of the iPAQ until the screen fades.
For the HP iPAQ h5000 Series and H3800 Series, the procedure is the same as the h2000 Series with the only difference being on some models the Today button is used instead of the iTask button.
For the hw6500 Mobile Messenger Series and hx2000 Series the procedure for the hard reset is precisely the same as for the devices in step 4.
For the rx3115 and rx3715 models, hold down the Mobile Media button (on the far left) and the iTask button. Then press down the reset button with the styles for a few seconds until the screen goes dark.
For the rz1710 and rz1715, follow the same procedure as the devices in step 7, with the difference of pressing the Today button (on the far right) instead of the iTask button.
To turn on your HP iPAQ after your hard reset, either press the reset button again, or plug it into an AC power source.

Tips & Warnings

* If you’re iPAQ is simply slowing down or having problems, try a soft reset (reboot) before resorting to a hard reset.
* Read your iPAQ’s instruction manual to familiarize yourself with how to do a hard reset, and the effects of performing one.
* Do not perform a hard reset unless you are okay with or intend to erase all non-factory installed data and settings from your HP iPAQ.

Posted on Mar 17, 2009

  • 2 Answers

SOURCE: Hp ipaq rx5935 hangs at the end of the HP booting sequence

remove battery for 6 hr and reinstal and then hard reset.

Posted on Aug 26, 2009

  • 36 Answers

SOURCE: Tried to update iPAQ ROM, iPAQ died in middle of Install. Help!!

Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} 1.) Make sure battery is charged
2.) Locate the rom you want to use
3.) Remove machine fro cradle
4.) Press the POWER + iTASK + CONTACTS + RESET buttons at the same time so as to enter the FLASH Mode
5.) Make sure your USB connection to the Cradle is hooked-up.
6.) Place your PDA in the USB Cradle.
7.) Stop the MS ActiveSync session on your HOST PC: CTRL-ALT-DELETE > TASK MANAGER > PROCESSES.
8.) Highlight WESCOMM.EXE and select "End Process" button.
9.) Run the file you downloaded from your Vendor in step 3.
10.) The PDA should now begin Flashing the iPAQ's ROM BIOS.

Posted on Jan 22, 2010

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


1 Points

Related Questions:

1 Answer

.... Driving me crazy like

Make sure that your device supports the Wifi encryption you are using. As an example, the H4150 only supports 64 or 128 bit WEP encryption.

Mar 15, 2011 | HP iPAQ H4150 Pocket PC

2 Answers

HP IPAQ H4150 + Memory Cards

Your HP IPAQ has a SDIO expansions slot...

which is a new technology.

so will have to use an SDIO card ...
this is a secure digital IO card.
hope this will solve the problem

Oct 30, 2008 | HP iPAQ H4150 Pocket PC

1 Answer

Hi I treid to do a ROM update on my HP iPAQ 4150. The update stopped and the screen now shows 1.05H and 1.02 and only the HP logo. Does not go anyfurther. Furthermore the iPAQ is not recognized by...

I ran into the same issue with a H4150. Pull the main battery and let it sit without the battery for a while; a few seconds is not long enough. I let it sit for about two minutes and that was long enough on each of the four times I needed to recover from a failed ROM upgrade last night. This reset the H4150 and it then initialized like it was just out of the box; all data and settings were reset to original. Some troubleshooting procedures indicate you should not use a USB hub for this process. That did not work for me-the ROM upgrade still breaks the connection just after getting started. But at least pulling the battery got the iPAQ back to a useable condition. My next test will be to try it from an old PC with Windows 98 and USB 1.1 or 1.0. Maybe the brief disconnection is normal and a fast PC with a modern OS may not be as forgiving to brief upsets. Just as the ROM update really begins (after all the handshaking), the iPAQ briefly drops the connection and that's when the update fails, it just takes a little longer for the software to say 'hey-I've lost communication with the iPAQ...'

Oct 03, 2010 | HP iPAQ H3835 Pocket PC

1 Answer

IPAQ H4150

Is it under warranty?

If you have tryed the full reset / hardreset.

and still the device doesn't give out any signs of life, I suspect there is a fault in the mainboard how are the battery connections? all good?

theres a motherboard replacement service available

you can also buy the parts yourself and replace'iPAQ%20Parts%204100%20Series'

But if you have warranty then send it in for warranty repairs.

Jul 13, 2008 | HP iPAQ H4150 Pocket PC

1 Answer

Ipaq H4150

Have you used a Vista PC as the host machine? ROM updates can only be done from a Win XP or 2000.

Hook the iPaq to an Win XP or 2k PC, install active sync first, and then get the ROM update again. Run the Rom Update Utility and it will recognise the iPaq and will update it correctly. :)

Dec 10, 2007 | HP iPAQ H4150 Pocket PC

2 Answers

HP iPAQ 4150 battles Vista -- HELP

The Microsoft Windows Mobile Device Center requires that the first sync be made via the USB sync cable. After the h4150 is plugged into the Vista machine, the WMDC opens and prompts you through setting up a partnership. Then you can set the h4150 to sync via Bluetooth.

ActiveSync works fine with Vista. Ignore that other guys post.

Nov 29, 2007 | HP iPAQ H4150 Pocket PC

1 Answer

HP ipaq h4150

New firmware, if available, can be found on the site.
Then again HP has never been good at taking care of their customers so you may find that there is no new firmware at all.

Nov 26, 2007 | HP iPAQ H4150 Pocket PC

1 Answer

Hp IPAQ H4150

thanks for the post. the first thing is to install the ipac software and try see if the syetm can sysnc. when properly configured there should be an ipac icon in my computer, open this folderand other sub folders will be visible,if you have an SD card media in this device it will be visibleas well. try copy the music of your choice from the system into the music folder or your sd card depending on your pref.

Aug 10, 2007 | HP iPAQ H4150 Pocket PC

2 Answers

Ipaq h4150 failed rom upgrade (white Screen)

Pull the battery out, wiat for a minute and reinstall the battery and turn it on.

May 12, 2007 | HP iPAQ H4150 Pocket PC

1 Answer

IPAQ 4150 & WiFi

hi i've never known them not come back on after going off, but have noticed they do switch back on, on their own when the wifi is enabled. when i want mine to stay off i tap the arrows at the top of the screen and select "turn on flight mode" this will then stop the device searching for a network and will shut down. when you want wifi again turn the flight mode of in the same way.

Sep 08, 2005 | HP iPAQ H4150 Pocket PC

Not finding what you are looking for?
HP iPAQ H4150 Pocket PC Logo

Related Topics:

24 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP PDAs Experts

David Payne
David Payne

Level 3 Expert

13437 Answers


Level 3 Expert

3932 Answers

Bob S

Level 1 Expert

15 Answers

Are you a HP PDA Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides