My system has a bad virus attack & my current AV, Norton isn't helping one bit. I need to change to an AV that is more effective. Please suggest ASAP guys!

it depends if you want to use a free version or a paid version. I would suggest kaspersky if you plan to use a free software. In case you want a paid version then try quick heal.

Lately I have noticed many of antivirus related posts where directly or indirectly people are endorsing QuickHeal. I think Admin should check these accounts for spamming. I have no hatred against quickheal but on my personal experience, it was not good with resources and also failed to counter not so common virus infection. I also advocate Kaspersky, a very good product but unfortunately its not free.

Thanks for the suggestions Ankush & Aarish. Will definitely try either of the two.