Lava Mobiles — lava iris 50 (while installing operating system mobile is dead)

Address:

41200

Dear sir,
I bought lava iris 50 few days ago from abroad. I forgot its security pattern. For solving the issue, I was re-installing its operating system through my personal computer but unfortunately while installation the electricity was failed. After this when i tried again to power on the mobile by putting its battery into it, it seems totally dead. After putting into it its battery, its is not getting on now.
please give me some guide lines or suggest the right way to power on the mobile and re-install the operating system.
if possible guide me about your nears customer care center in Pakistan the province of Punjab so that i could visit easily.
I will be thankful to you for your kind cooperation.