Doesn't start up

Soft reset Perform a soft reset
A soft reset stops all running applications, but does not erase any programs or saved data.

NOTE: Be sure to close all running applications before performing a soft reset.

To perform a soft reset:

1. Locate the recessed Reset button on the HP iPAQ.
2. Use the stylus to lightly press the Reset button.

Hard reset
To perform a hard reset and return the HP iPAQ to factory settings:

Press Win + OK + Record together.
While doing that, press reset button and hold for 3-4 seconds.
Release reset.
Release buttons.

NOTE: Do not release the buttons until CLEAN REBOOT appears on the screen.

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response

Thanks, Joe


I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

A factory reset erases all user-installed settings, programs, and data, and restores your HP iPAQ to factory settings.
CAUTION All user-installed settings, programs, and data are erased from memory with a factory reset.
To perform a factory reset and return your HP iPAQ to factory settings:

1. Press and hold the OK and Rotate Screen buttons.
2. While holding these buttons, use the stylus to lightly press the Reset button on the HP iPAQ until the device restarts.
3. When the HP iPAQ restarts, release all of the buttons, and then remove the stylus from the Reset button.

The HP iPAQ will now restart and power on.

If you have done the above and still no go. Then your main drive has probably failed.

Link below is a repair how to video
http://www.wonderhowto.com/how-to-repair-hp-ipaq-rx4200-rx4240-rx4500-rx4540-243534/view/

To do the hard reset, while on battery (NOT A/C) power, hold down the two outside front-panel buttons (Calendar and iTask), While holding them, press the reset button with the stylus. Keep these buttons all pressed until the image on the screen begins to fade (about 4 seconds), then you can release the reset and application buttons. To restart your iPAQ, you must then plug the unit into A/C power, or do a Soft Reset by again, pressing the reset button with the stylus.

here is your answer
but if you want to solve your problem quick
microsoft takes 11$ to fix it

see this if this help you

Resetting the Device

Sometimes there is a need to reset your Pocket PC. Resetting the
device is known as performing a "soft" or "hard" reset.

Performing a Soft Reset

A soft reset stops all running applications, but does not erase any
programs or saved data. Be sure to save any unsaved data within
a running application before performing a soft reset.
Perform a soft reset to:
■ Stop all running applications
■ Install a new application
■ Restart the Pocket PC if it stops responding

To perform a soft reset:

1. Locate the recessed Reset button on the bottom of your iPAQ
Pocket PC.
2. Use the stylus to lightly press the Reset button.
The Pocket PC restarts and displays the Today screen.




Performing a Hard Reset

Perform a hard reset only when you want to clear all
user-installed settings, applications, and data from RAM
(Random Access Memory), where data and applications you have
loaded are stored.

CAUTION: If you perform a hard reset, your Pocket PC loses all data
and programs not saved in iPAQ File Store.

To perform a hard reset:

1. Press and hold down the Calendar and iTask buttons.
2. While holding down these buttons, use the stylus to
lightly press the Reset button on the bottom of the iPAQ
Pocket PC for about two seconds.


3. When the Pocket PC screen begins to fade, release the
Calendar and iTask buttons first, and then remove the stylus
from the Reset button.

Note: If you simultaneously push and hold the Reset, Calendar,
and iTask buttons for more than two seconds, the battery
disconnects. To restart the device, either plug the device into the
AC Adapter or press the Reset button again.
After performing a hard reset, you may need to reinstall
applications stored in iPAQ File Store to restore shortcuts and full
functionality.

4. The Pocket PC resets and powers on.

To return your iPAQ Pocket PC to factory settings after
performing a hard reset:

1. Tap Start > Programs > File Explorer > My Device.
2. Tap the iPAQ File Store folder to open it.
3. Tap Edit > Select All.
4. Tap and hold the selected files, then tap Delete.
5. Tap Yes to delete all file in iPAQ File Store.

Hi,
Try This:-
To perform a factory reset and return your HP iPAQ to factory settings:

1. Press and hold the Quick Launch and Rotate Screen buttons.
2. While holding these buttons, use the stylus to lightly press the Reset button on the HP iPAQ until the device restarts.
3. When the HP iPAQ restarts, release all of the buttons, and then remove the stylus from the Reset button. The HP iPAQ restarts and powers on.
Mike @ compurepair.

some software program is causeing it to slow down.

try uninstalling some of your programs, or preform a hard reset witch returns the pda into the original state.

How Do I Perform a Hard Reset?

Perform a soft reset when:

1. Press and hold the Calendar and iTask buttons.
2. While holding these buttons, use the stylus to lightly press the Reset button on the bottom of the iPAQ Pocket PC for about two seconds.
   
3. When the Pocket PC screen begins to fade, release the Calendar and iTask buttons first, and then remove the stylus from the Reset button.
   CAUTION: If you push and hold the Reset button for more than two seconds, the battery disconnects. To restart the unit, either plug the unit into the AC Adapter or press the Reset button again.
4. The Pocket PC resets and powers on.

You can do a hard reset by doing the following...

01) Press and hold down the "Calendar" and "iPAQ Wireless" buttons.
02) While holding down these buttons, use the stylus to lightly press the "Reset" button/hole on the back of the iPAQ until the screen goes blank.
03) Release the "Calendar" and "iPAQ Wireless" buttons.
04) Press the "Reset" button/hole again (so that it resets/powers on.)

detach battery and leave it for 30 minutes. reconnect battery (better if charged outside optionally).start the ipaq. hoping your mental relief.

On the front pannel you have the 4 buttons and the central navigation key. Press simultaneous the first and the last of this buttons (1 and 4) and then with your stylus (while keeping these buttons pushed) press the soft reset button (bottom of the device, a small hole). Keep these pressed alltogether for 4-5 sec then release them and do a soft reset. Your PDA should now be in factory settings. If not, try again. It will work.

Just hold down the calendar and today buttons, these are the two outer buttons on the lower left and lower right, then using a stylus press and hold for at least ten seconds the soft reset button this is located on the lower right edge of the unit. The screen should reset and the iPAQ will boot up again.