Grey Screen Crash

[Pudnite]

Hi guys, so when I’m running iRacing sometimes my computer like freezes and on one screen it’s completely Grey and The other monitor goes black and I have to restart my computer. What could cause this?? My graphics card?

 

[popatim]

It could be anything really.
If you get an error message then post what it says or take a picture, host it on an image site and then post a link to it here.