On a more personal note, I had an issue a few years ago where my Inspiron 5584 would get stuck on the Dell logo at every restart and would not boot up correctly. I was unable to enter the SupportAssist OS Recovery / Dell SuportAssist Remediation recovery environment by the usual method (i.e., tapping the F12 key when the Dell logo appears to access the One Time Boot menu). I was told that SupportAssist OS Recovery should also launch automatically if your system fails to boot correctly after 3 or 4 consecutive attempts, but I performed several hard shutdowns (i.e., by holding the power button for 10-15 sec to shut down, and then powering on again) but I still could not get into the recovery environment . At the time my 1-year service warranty was still valid, but it took over an hour on the phone with Dell Tech Support before I was finally able to enter my recovery environment and start a reset to factory condition. However, I have no idea what I did that finally allowed me to access the recovery environment - it just popped up after I powered on after yet another hard shutdown. Luckily, I perform regular backups of my data and personal files to an external hard drive using a backup utility called Karen's Replicator so I was able to recovery my data after the factory reset ran to completion.