DLLs ARE NOT INJECTING

I need some help I bought a new computer and I cant inject the DLLs into mw3, i tried disabling my anti-virus witch is avast and tried several hacks and injectors, in my old pc they worked. It's a ASUS windows 7 64 bits intel core i3 with 8 gb ram and NVIDIA Geforce GTX 550 ti my pc's fresh i bouthg it two days ago.

---------- Post added at 02:00 PM ---------- Previous post was at 01:29 PM ----------

and i dont know if this helps but in the taskmanager i see iw5mp.exe *32

well thanks for nothing i already solved it