I'm at my wits end here! Dell XPS 15 9530 laptop shuts totally down instead of sleeping. In event viewer it shows as "unexpected shutdown" critical error. I have tried adjusting advanced power settings over and over, but I don't believe that has anything to do with it anyway because HERE is the weirdest part. Laptop will NOT turn back on until I have unplugged the power adapter. IF I plug the adapter back in too quickly it will hang on the Dell logo splash screen until I finally have to hold pwr button down to shut off. This leads me to believe it is SOMETHING in the BIOS but I don't see anything in there to do with power settings at all. I have turned off fast boot in both BIOS and where it has that option in the control panel. Other things I have tried....
I have disabled the Dell "battery saver" application completely
Adjusted advanced power options until I'm blue in the face, including USB selective suspend, turning off hard disk and other devices after a certain amount of time, and every other power option in there (one-by-one which is a REAL pain in the bum) even if I thought it couldn't possibly have anything to do with this problem!
Hibernation is completely turned off and has been for quite some time.
I checked through list of services because I know AMD (I have intel) has an adaptive power option that can sometimes cause this symptom, but I don't see anything comparable to an Intel version of this. (If there is, someone please let me know!)
Suspecting BIOS I, of course, checked at dell.com (and just again before coming to write this) to be sure I have ALL latest driver updates.
My windows updates are current.
I don't think it's power adapter related because I have 2, genuine Dell, and it does same thing with either adapter.
I'm TOTALLY stumped here. I own a successful local computer repair business so I've come across stuff like this before, but this is MY laptop and I've tried everything I can possibly think of. ARRRRRRGGGGGGGGGGG...so frustrating to have to completely shut down every time I need to transport my laptop or save and close things I'm in the middle of.
I really hope my mobo isn't going bad...here is why I suspect that. About 3 weeks before the the shutdown instead of sleep thing my main drive in my drive monitoring program started showing CRC error counts - which, if I'm not mistaken, basically means there's an error in the way that the HD communicates with the computer - so it COULD be the cable that connects to the mobo needs replaced. I haven't cracked my case open to try switching it out yet. I have no idea if this has anything to do with current symptom, but thought it worth mentioning.
SOMEONE PLEASE HELP!!!!!!! I will take any and all ideas and/or opinions!
Dell XPS 15-9530
Win 10 Home 64bit
NVIDIA GeForce GT 750M
Intel HD Graphics 4600 (generally stay in this graphics mode)
1TB Samsung SSD 850 EVO (Main drive with OS installed)
1TB Samsung SSD 850 EVO mSATA (no programs installed, strictly storage/backup drive)