Im trying to fix someones pc for them,but im stuck, I turn the pc on then a screen comes up saying "Unmountable_boot_volume and " A problem has been detected and windows has been shut down to prevent damage to your computer." I try loading it in safe more and all other modes that are in the option menu but the screen go's back allot of numbers scroll up and then it go's strat back to the option screen ? and the only way to get rid of it is to turn it off. Im really stuck on this one and id be very gratefull for any help. thanks.