Hi, today I got a new Mainboard for my PC. After installing it and installing Windows new etc I fired up Raceroom and it worked. After setting up the Oculus Rift software I wanted to try it again in VR. But it didn't start, it just didn't start Steam VR as usual. No error message. Nothing. Tried again without the -vr startup argument and it didn't work either. Checked the firewall and everything was checked for raceroom. After deleting the Raceroom folder in "Documents" it worked again. After playing it a bit and closing it again it won't start up again! But this trick didn't work a second time. Also, it doesn't matter if I try to start 32bit or 64bit Version. After removing Oculus Software it's still the same. Installing Raceroom again doesn't help either. Steam file integrity check doesn't too. I have no idea what I can do next.