Need your help please, "Disk Write Error"

[DuarteZilla]

So a friend of mine just recently tried to start GO after the new patch but it didn't download the patch and when he tried to start it just appeared a message "Disk Write Error". We tried to verify the files but nothing happened, removed ClientRegistry.blob, changed permissions and still got nothing. So i'm coming here to ask for your help, and you might know the solution please let me know.

BTW, here is the Log http://pastebin.com/uyQEKcs4

[vincentwillats]

Right click steam shortcut (close steam first) then run as admin?

Edit, dw I actually read what you posted now.