I have been given a Asus T100ha laptop where the previous owner somehow go into cmd prompt and accidently "cleaned" the C: drive and now it is missing from boot options, just goes stright into bios where there are no selection options under "Boot".Have spent many a hour searching for options and have tried every answer but not luck. So far I have made multiple bootable thumbdrives, tried external dvdroms, winpe, recovery USB but all start to indicate about to boot at startup but then goes straight into bios again. Any assistance geatly appriated.