There's an old joke from a carpenter No matter how many times I cut that piece of wood, it still comes up too short Many times we try to find a silver bullet to fix our problem, only to find later that there was a better choice. ALWAYS get a second opinion whenever you're told to reformat your HD! Many support people do not know how to really FIX some problems OR they don't want to take the time to walk you through a difficult solution. As an example a symptom like WINDOWS\System32\Config\System is corrupt is frequently fixable, but it's too late if you start down the reformat path (see https://www.techspot.com/vb/topic98544.html) There's always the trade-off of time to fixit vs time to recreate it, but as many do not have any backups, walking slowly thru a list of alternative actions considering the pros/cons may be very helpful. More than once I've seen systems with nasty symptoms that implied reinstall or reformat and the solution was some trivial task like fixmbr or the example above. At the very least, you should have some good insight as to what is important to you on your system(s) and take some kind of action to ensure that it is duplicated elsewhere for that nasty day that the 'chickens come home to roost'. Techspot has lots of great information on specific problems and their solutions -- PLEASE spend some time SEARCHING before you wipe your HD clean and suffer major losses.