I use a acer E1-510-2602 model i bought a year ago. It came with windows 8.1 and ever since that day my windows always messes up and i always refresh the laptop. I upgraded to windows 10 hoping that it would end but am still having the same issue meaning i always have to re install windows almost every month and the most annoying thing is that it doesn't recognize any windows in any hard disk i put into the machine at all and my hard disk with its windows doesn't also boot in any laptop i place it into. Am so confused, it is the hard disk on its my laptop?? 

