Commtiva n700 not resetting


May 19, 2012
Hi I have a commtiva n700 and my mom took it away frm me for studies nw its summer vacations shes given it 2 me. I had changed my google account meanwhile. But my tab was linked 2 my old google account n nw it doesnt open anything like market and I tried resetting it so I could link it 2 my new accountbut when it resets n starts up it show WELCOME and in one corner it shows in small letters starting recovery mode but it doesnt go past the WELCOME logo. I had rooted it a long time ago. Plz help!!!:(
P.S I had uninstaled all apps and and updates.