yesterday i connected my windows 8 lap to net and was downloading a file from torrent. today morning when i got awake, i just shutdown my lap.. after some time when i switchon my laptop, it was working fine.. but whenever i connected to wifi or 3g net., windows 8 get stuck, and i am not able to open internet explorer or chrome. , it prompt me to shutdown using power button. ( not able to shutdown with charms bar) . i am able to open internet explorer/ chrome when net is not connected. please help..