How to completely remove any evidence of hacks?

Hello. So i play Combat arms, and im in a high ranked clan. I dont hack in combat arms, but i tried to download a few yesterday... My clan teamviewes everyone once a month. how can i completely remove an evidence of hacks?!

Thanks guys

How can your clanmates tell that you used hacks?? =S

1. Go to my computer
2. right click Local Disk (C)
3. Click Format
4. Once the pop up opens, click start