[Q] Venue 3830 stops in the logo screen after reboot system now option topic

I follow the next steps to make a factory reset but it stops... what I should do?

1.- press and hold the power + vol down buttons, it shows a first menu...
2.- select the recovery option and press the power button to chose...
3.- press and hold the power + vol up buttons, it shows a second menu...
4.- then chose the wipe data/factory reset option and wait...
5.- when finished select the reboot system now option and it should be done but!!
... but when I reboot the venue 3830 in this last step appears the dell logo screen and I been waiting for a 4 hours and nothing...

what can I do??... please help me!!