Injectors not working

so it says "injection Succesful" or PerX closes, but when im in game i press the hack key (Del. or InS) but nothing happens then i try over and over but it doesnt work, ive used different injectors (stealth, Perx and g3n or something) but still nothing works....

P.S i have ActiveX latest version and i have Net. framework

HELP!

Turn off your UAC
Run as Admin if your using vista
Try again.

If you have vista run as admin

Try renaming your .dll

make sure your hacks arent patched

and you might need the lates DirectX because of the errors (different from ActiveX)