I have comprised and been having lots of tribulations through my system for the last 2 months. Initially my processor's cooling fan died and my system might go to a black screen telling me it was going to shut off robotically and with the intention of the fan needed replacing. It was in addition beginning to sluggish down at the same time as opening up folders and minimizing/opening windows. In anticipation of it took too long that to facilitate I powered it off physically then that is when it began to boot up the black screen for me to boot system repair.
Bookmarks