I have a Latitude E6520. I had not been using it for a while due to the instability I was having with it, but I decided to see if I could get it retooled and worked properly. I bought a new solid-state drive, did a clean install of Windows 10, flashed the BIOS to the latest revision and upgraded all drivers. Still, I randomly experience unexplained shutdowns with no consistent pattern. Typically, the machine shuts down when I am not using it so I don't have any experience into what happens prior to the shutdown.

The machine will sometimes remain stable for days, but other times will shutdown after only a half-hour or so of being in use. The Windows log entries are not helpful as there is nothing shown prior to the shutdown, and only an error message stating that the previous shutdown was unexpected. The BIOS power events show Power Off - ASF2 force off each time the event occurs.

I've scoured search results and this forum for answers but nothing definitive seems to appear. Obviously, this is an older machine but it's hardware specifications are still more than adequate for my needs and I would really like to avoid having to replace it. I'm interested in whether or not there has been anything definitive, preferably from Dell support to address this issue. At the very least, I would love to know how to access any other logs for this alert standard format (which I believe to be what ASF stands for) messaging system which might give insight into the faulty software or hardware components. I appreciate any assistance anyone is able to provide.