Have you done any BIOS or driver updates lately?
I would reset the BIOS to defaults and see if that helps. Even deeper, do a CMOS memory reset by removing the backup battery CR2032 for 10 minutes. Run the hardware diagnostics, accessed by F12 at power on.
If nothing shows up, I would have the AC power supply checked as a first step.
Dell forum member since 2002
Dell Inspiron 15 - 5577 Laptop
Home Built Desktop PC with ASUS ROG Z170, i7 6700K CPU
Windows 10 64 bit Pro and Windows 10 Insider Program Beta Versions. SSD drives. Cakewalk by BandLab and Studio One 4.1 Recordng Studio Software.
Dell S2719dgf Monitor
Member of Nashville based R.O.P.E.
Thanks for your reply.
I've noticed that I have switched my Alienware adpater with my Dell adapter. They have the same wattage and looks exactly the same. Even the model number is the same.
The problem is not 100% solved. Sometimes my Dell laptop takes around 20 seconds to start booting up(i.e. before the Dell emblem appears). I don't know whether this may be the cause, but I've noticed that after a shutdown, if I remove a USB device from one of my laptop's connections (e.g. an external USB mouse or keyboard), this 20 seconds lag occurs.
Can this be the cause? Any ideas please?
I have the same problem. You seemed to have figured it out more though! It didnt used to do this from my experience. Kinda gives you a little mini heart-attack, I always feel like it might be stuck like that forever XD