if i were you, i'd reformat my pc. nothing beats a sound mind.
and since you are open to the idea of starting anew, do it. but next time, save a system image of your pc so you'd no longer have to undergo the trouble again of reinstalling. if you already have a system image, use it. and next time, use protection if you dont have one
. personally, i use kaspersky combined with mbam and sas and it works wonders! mse is good to. i use it on my desktop since my license expired there and still am broke to buy a new one. many people on this forum will suggest mse or avg. it's up to your personal preference really. im satisfied with kaspersky and also with mse. but i still sleep better with kaspersky
and oh, i dont think you are allowed to say curse words here