IPAQ H4150 Hibernated, will not restart, hard reset has no effect, battery recharged externaly

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.

Have you tryed todo a hard reset? need to know your ipaq model for instructions

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...'

Hi there,

I suggest to you to buy a new battery for you HP iPAQ H4150 Pocket PC and see if that charger will charge it up. If the new battery does charge then the problem was with the old battery.

If it doesn't charge up on the new battery then, your problem lies with the battery charger. You should check that the voltage of the battery charger is compatible to charge the voltage of the battery.

Hope I have been of assistance to you,

Cheers :)

try to hard reset device
when you do it hard reset it comes factory default

you might need to replace:

A. the main Li-Ion battery

B. the backup Ni-methal battery.

or maybe C, fix your battery cover.

that's it! great device btw..!

Simple Solution:

Perform a hard reset and then attempt to login repeatedly (10x).

You will then be prompted if you wish to reset the pin entirely.

Good luck,
-AndyPants-

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. :)

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

POST HERE
http://h30434.www3.hp.com/t5/forums/searchpage/tab/message?q=IPAQ+h4150

I THINK ITS TOAST
more trouble than its worth

worth $35 used
working, broken? $5?