Trojan Fake Alert

Hi guys, I have a problem with a “Trojan Fake Akert” it keeps popping up and telling me I have infections all over my computer. And I find Personal Anti Virus has been downloaded to my computer. I have run all the usual programs, Spyware doctor and such and I’ve disabled system restore but the ■■■■ thing keeps coming back can anyone help me here please.

hi wwshump,welcome to the forum (:WAV)
could you please follow these steps here
what to do if you’re infected

it’s possible you’re infected by rouge AV