physx issue

[muratvural95]

while i was installing game it asked for physx intall i cancelled it because im using ati radeon after i download 7.2 gb while i was entering game it gave error for physx. i used potbs setup for install physx. it installed and i exit installing. i clicked launcer and it wanted reinstall 7.2gb i tried system recovery and its fail help please i wont reinstall 7.2 my pc is working for 2 day please help...