Hey guys so I'm trying to help a friend with his dual monitor setup after upgrading to windows 10. They were both working fine before however now the second monitor is either white or black and has weird lines all over it. We tried messing with the settings and eventually tried unplugging the second monitor and then the scan lines and white screen went over to the main monitor. The we plugged it back it and now the second monitor works and the first monitor has the white screen and weird lines. Haha I'm not sure what the problem is. He did tell me he upgraded to win 10 with both monitors plugged in so I'm not sure if that messed him up. Thanks in advance guys!