Try using game booster or swift clean to cllean the Combat armz files. go to canyouruni*****m and check if your comp has the recuirements
Reinstall ca and get these if u don't have. *Latest diectx(august update) *Service packs for computer *And frame network 3.5
Learning some grammar usually helps. But really, try a reinstall, make sure all drivers are updated, make sure DirectX is up-to-date. System specs? Start>Run?dxdiag Processor ram video card (mb/gb)
Everyones Basically Going To Tell You Same Solutions. Try Cleaning It, If That Don't Help The Un-Install+Re-DL+Re-Install.
4