As tinkr told, Xorg.0.log sometimes is good to debug. I had a similar problem with same symptoms, my case was a buggy .xinitrc in home directory - but Xorg.0.log didnt pointed that out, solved via try/error to find out.
cheers. x9p > You're reporting a problem with X, therefore now and always please attach > a copy of /var/log/Xorg.0.log . > >> It has Windows 10 Home pre-installed. >> I am trying to work off of USB flash drive. >> >> BIOS has UEFI or legacy option. I have to use legacy option. >> >> Won't finish booting unless I disable inteldrm >> I also allowed the aperture to be set at 2. didn't help. >> >> Boots OK, but it is slow. >> And no X. Says no screens found. >> >> Many options in the BIOS are simply unchangeable and network boot likes >> to turn >> itself on occasionally. >> >> There is also an option for a GPT. >> >> Booting off of Innostor PenDrive >> >> Thanks, >> Chris Bennett >> >> here is the dmesg: >> >> >> OpenBSD 6.2 (GENERIC.MP) #166: Tue Oct 3 19:58:05 MDT 2017 > ..