cold boot blackscreen. GPU or MB?

On the uncommon event that I’ve to cold boot my laptop, I typically get caught in a black display. Actually, I’ll see my graphics card’s data for a pair seconds (in a cmd/dos-like textual content), then the display stays black for an uncommon period of time. Several minutes could cross, after which lastly the MSI (motherboard) splash picture of a race automobile will seem, then home windows 10 will load, and issues will begin working usually once more. 
Does anybody know what might be the foundation trigger? The PC was inbuilt 2016, so is overdue for an improve… however the costs today
Note for clue functions, I typically get impatient when this occurs and take out the graphics card, and join one monitor to the on-board graphics. This appears to not at all times make a distinction. The display stays black for a moody period of time, till ultimately the MSI emblem seems and home windows begins. Then I’ll put the graphics card again in, and undergo the identical challenge, although the black display period appears to be shorter. 
It makes me suppose it is the motherboard or CPU? however I hoped for affirmation. 
Note that my mouse and keyboard power-on usually throughout this ordeal. 
MSI Z170A Gaming Pro Carbon LGA 1151 Intel Z170 HDMI SATA 6Gb/s USB 3.1 ATX Intel Motherboard
CPU (not overclocked)
Intel Core i5-6600K 6M Skylake Quad-Core 3.5 GHz LGA 1151 91W BX80662I56600K Desktop Processor Intel HD Graphics 530
PNY GeForce GTX 1060 – CG Edition – graphics card – GF GTX 1060 – 6 GB GDDR5 – PCIe 3.0 x16 – DVI, HDMI, 3 x DisplayPort

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