Given various other problems Ive been having with my PC (slowdowns, very high fan speed which isn't dust-clogged etc) I think its most likely a bad hard drive. Ive re-installed Java though...no joy 
Given various other problems Ive been having with my PC (slowdowns, very high fan speed which isn't dust-clogged etc) I think its most likely a bad hard drive. Ive re-installed Java though...no joy