Factory reset 8100 - HP Officejet Pro 8100 ePrinter CM752AB1H

reset it in deafult configuration (factory default).

This may be due to a faulty battery. Try plugging the phone into the wall charger, and see if the blank screen goes away while plugged in. If it does, then it is a faulty battery, and you need a new one. If it doesn't, try to do a factory reset through the desktop manager.
Hope this helps!

Read here how you can restore it to factory defaults http://www.fixya.com/support/r8417061-restore_laptop_original_settings

You Blackberry needs to be restored to factory settings.

The steps you need to take are described at : Restore Blackberry to factory settings.

try hard reset, the easiest way to do this is to remove the batter for 1-2 minutes and restart the phone, you will see a sandbox in the center of your screen. wait till it disappears and fully restarted. hope it works for you as it works for me.

go to option>security options>
general settings>
press your menu button>
select wipehand held>
read warning>
then enter blackberry for your password

If you get the password wrong after 10 tries, it should perform a factory reset; however, you will lose what ever you had saved on it (notes, 3rd party software, etc.). If you regularly backup the phone, it shouldn't be an issue.

Hope this helps,
Bill

try hard reset.here is how its done.make sure you backup everything before you do this as it will reset to factory settings.

From the home screen, select Options | Security Options

Select General Settings

On some devices, you now select "Services". If this isn't available, go to next step.

Click the trackwheel, and select Wipe Handheld

Click Continue

When prompted, type "blackberry" to continue

Your BlackBerry device will erase all the data and put the settings back to factory default

Go into the help menu, select option tab, scroll down to system settings and select Factory Reset, select yes 2 times (are you sure?) and all memory will be erased

Pressing Reset or changing batteries does not reset Vmigo.