OZuna: Twice till now game crashed to black screen and I had to force restart whole pc (not only crash to the desktop). I have nvdia geforce 970, 16 gb ram and i7 procesor. I have found some similar problems with black screen on the internet and I think that it is caused by graphic card - 970 gtx because all thse problems are similar with this card. Maybye overheating or bad driver, I do not know, but I have the lastest version of nvidia drivers.
Do not listen to vbiasi...her advice is worthless to say the least. Anyone who suggests sending your card back to the vendor because you have a problem with a new game like many people are having here and also on steam should not be advising anyone.
Since the game release my computer also would crash and I have tried windows 8.1 8 and 7 , I downloaded who crashed and it was reporting the same problem everyone who was crashing was having, the NVidia card couldn't recover from a timeout so I have tried about 20 different drivers, turned all settings down and no matter what I tried the game would just bomb out my pc to restart. This was very frustrating and I know how it is for you from my personal nightmare.
Two days ago I copied and pasted The Witcher 3 folder on my caviar blacks raid 0 installation to a SSD (solid State Drive) and FIXED for me.
I have every setting in the Nvidia control panel set to maximum and in game I have everything on ultra, I don't use vsync and the game is looking amazing and very smooth with not one single crash.
I am thinking the CPU & GPU are working in tandem in this game (just like the final test in 3DMark11) and because SSD's read/write 10x faster there is no bottleneck. Even though my caviar blacks in raid 0 are fast, they can never compare to an SSD and the fact that I have fixed my problem with this game by putting it on an SSD tells me my computer was being bottlenecked playing this game on Hard Drives.
This worked for me and I am just sharing my experience with you, and all that read this, this fix I found FIXED my problem and may not be a fix for anyone else, also my opinion on why my pc was crashing like over 100 times before I fixed it is my opinion only based on what knowledge I have and not from an expert or some kid who thinks she can re-invent the wheel.
I hope this works for others also, after cut and pasting to a SSD just go to configure on GOG and select import folder and browse to your SSD and it will be verified and installed properly on your pc without having to download the whole thing again.
Good Luck
Vicyboy - 47 year young gamer
P.S. I thought i better click edit and put in my system specs
Gigabyte X58A UD7 Mobo
Nvidia EVGA Classified GTX680
Intel i7 Gulftown 6 cores overclocked 4Ghz with Intel water cooler block and radiator
Corsair 12Gb dominator ram overclocked 1600Mhz with cooler fans
Corsair HX650W PSU
Asus Xonar Essence ST sound card
2xCaviar Black's 650 (1.3 TB in RAID 0)
1xToshiba SSD 128 (windows installation)
1XOCZ Agility 3 SSD(The Witcher 3 installation)
2xOCZ SSD 64 RAID 0
Samsung BLU-RAY player
Samsung 37" LED
Steelseries mechanical keyboard
Logitech G700s mouse
Sennheiser PC360 headphones
Seagate 1TB usb3 portable drive
Harman Karden Soundsticks 2
TrackIR