tradeadexchange virus

Hello All, 

I have got this stupid virus called TradeadExchange, yet I am doing full scan with my NIS 360 but cannot find it. 

I have tried many other antivirus and malware clearners but couldn't get rid of it. 

I am trying the norton power ereaser, but after the restarting of the computer (as NPE is telling me to do so), I have its icon on my startup bar (it is running) but i cannot open the window. 

when i click on the icon, it is not responding, when i check the ctrl+alt+del i see that it is running. 

what shall i do?

why norton internet security is weak about this virus.