My Dell Inspiron 7348 auto shutdown, how to fix this

Hello there,

My name is Khang, I bought a laptop Dell Inspiron 7348 (Service tag 4GWSB32) when I was in Seattle for business in May last year.

Just about recent weeks, my laptop shutdown unattended after few minutes or 20-30 minutes depend on what I am opening.

I ran F12 check or Support Assist tool, but they seem not showing anything wrong. I doubt this situation is related to CPU over heat at 70 C degree.

After shutting down about 10minutes, laptop automatic turn on, but when I use it, it will turn off after a while.

From discussing in Dell’s forum, I see instruction about disabled Intel speedstep may fix this, but I don’t have code for unlock setup.

Please show me how to fix this.

Thank you,

Khang