[Q] My Quart tablet stucked topic

My android device quart qc790 with android 4.1.1 jelly bean shows that i don't have command (android recovery mode)... i know how to reboot system, and how to change it also :D but there is one problem, my tablet don't have volume buttons

just 2 buttons on my tablet (power buton and button to go on main menu) :D