I could play the game for years without this problem occuring. This error started about 1 week ago.
As far as I can tell this seems not reproducable. It happens during the game as well as in the menu. Once it definitely happened when I clicked on quit (or exit?) game in the main menu. The screen turns black, all audio cuts out, sometimes I can hear a little noise and this drags down the entire operating system. No ALT+F4, ALT+Tab, CTRL+ALT+DELETE is working. I have to manually press the power key on my computer for 5 seconds to forcefully shut it off.
CPU Intel Core i7 6700K 4x 4.00GHz So.1151 WOF
MB ASRock Z170 Extreme3 Intel Z170 So.1151 Dual Channel DDR ATX Retail
SSD 250GB Samsung 850 Evo 2.5" (6.4cm) SATA 6Gb/s TLC Toggle (MZ-75E250B/EU)
VGA 8192MB Sapphire Radeon R9 390 Nitro inkl. Backplate Aktiv PCIe 3.0 x16 1xDVI / 1xHDMI / 3xDisplayPort (Lite Retail) DDR4 16GB (2x 8192MB) G.Skill RipJaws V DDR4-3200 DIMM CL16-18-18-38 Dual Kit
HDSA 2000GB Seagate Surveillance HDD ST2000VX000 7.200U/min 64MB 3.5" (8.9cm) SATA 6Gb/s
PSU 650 Watt Corsair RMx Series Modular 80+ Gold
NET Gigabyte WB867D-I WLAN + Bluetooth 4.0 Adapter PCIe 802.11ac PCIe x1 Win7 Home Premium 64bit / Win10 Professional 64bit
No other software is running at the same time except for discord and or teamspeak.
What I tried so far
I upgraded from Win7 to Win10, completely formatted the SSD and made a clean install. Installed steam and pubg freshly on the ssd. Made sure all the drivers are up to date. There's no error message or other notification when I reboot, so I can not even tell what went wrong.