I was using hdd and my system booting time was very slow and then i bought new m.2 ssd. I installed it to my pc and install windows in it. when i boot my pc i could not able to start any apps in my hdd. so i removed from it and reinstall into my ssd because there are only fews apps. after a month i my hdd automatically disconnecting and connecting in running pc. For e.g. i download movies and stuffs in hdd, when i was watching movies suddenly movies stop or suppose i open disk drive e which is my hdd. after few seconds file explorer automatically closes. and when i open my pc its only shows my m.2 ssd and after some times it shows hdd drive and then again i tried to open movies or open file explorer of hdd it closes and happen again and again.