Well, i just restored my computer to factory settings ( havent touched the laptop in 2-3 years. ) But when I go to download diablo iii launcher.. I get the "Updating system files" box and it stops at 40% or it doesnt update at all..

I get this error code: BLZPTS00007

Says "Failed to run a required program (Agent). Wait one minute and try again if that doesnt work please restart you computer and try again."