I had almost the same issue.
My laptop suddenly restarts without warning.
After reinstalling my computer 2 times the problem was gone.
I suspect that the problem rested with Intel HD grapichs or the network card.
I dident update them to the latest version anny more.
But did you check your Event logs from your pc? errors, issues etc..
ACER PREDATOR G9-791 |Intel Core i7-6700HQ |16 GB RAM |GTX970M 3GB |FULL HD | 750GB SSD | Samsung 850 PRO & 2X M.2 SSD RAID 0
G75VW |Intel Core I7-3610QM |24GB RAM |GTX670M 3 GB |FULL HD | 526GB SSD | Samsung 840 EVO & 850 PRO
GL552VW |Intel Core i7-6700HQ |12 GB RAM |GTX960M 3GB |FULL HD | 256GB SSD | Samsung