Welcome to the HP Forums, this is a great location to get assistance! I read your post and see that your HP 7voice tab is stuck and it`s is not responding. I would like to help you resolve this issue.
Use the steps in this section to reset an HP Slate 7 VoiceTab.
With the device powered off, press and hold the power button, and the volume up (+) button at the same time until the HP logo is displayed and the tablet vibrates.
The Android system recovery menu will display seconds after the HP logo displays.
Figure : Tablet power button
Figure : Tablet volume up button
When the Android system recovery menu is displayed, use the volume down (-) button to highlight Wipe data/factory reset.
The touch screen is disabled when the device is in recovery mode. Use the volume up (+) and volume down (-) buttons to navigate up or down in the recovery menu. Use the power button to make a selection.
Figure : Wipe data/factory reset
Press the power button to select.
The screen displays Confirm wipe of all user data? THIS CAN NOT BE UNDONE. Use the volume down (-) button to highlight Yes -- delete all user data.
Figure : Confirm wipe of all user data
Press the power button to confirm and begin the reset.
A recovery system screen shows the reset process. Wait for the reset process to complete.
When the screen displays the message Data wipe complete, highlight Reboot system now, and then press the power button to select.
Figure : Reboot system now
Wait for the device to reboot.
The factory reset is complete. Set up the device by following the steps in the HP support document Setting Up Your HP Tablet.