I saw lots of posts about black screen problems around here, but I havent saw any in my situation.
Im using:
AMD Athlon(tm) 64 X2 Dual Core Processor 5200+ (2 CPUs), ~2.7GHz
2048MB RAM
NVIDIA GeForce GT 430

So problem is every time after first restart (when Windows 8 finishes installation) I get black screen. I cant see any information like login, metro etc. I figured it out that problem is with my display.
Sometimes troubleshooter opens when I turn off PC in that black screen mode. One time I was able to run Windows 8 without a problem (I selected Low Resolution mode or something) and it helped but after automatic restart everything screwed up again. Then I installed windows 8 CP, it worked without any problem but now it expires and I tried today to install Windows 8 Pro again. Thing is if I try to install Release Preview or higher, in setup or anything, resolution screws up, i cant see any letters and cursor leaves marks when it moves. But anyway I tried again. I installed Windows 8 Pro and I get that black screen again. Troubleshooter came up when I turned PC off and I selected run in Low Resolution, then I can see everything normally and after load I get an error which says something about Installation was unsucessful and click OK to restart installation. I click OK and that error comes up always after restart. I tried about 10 times to re-install it and everything ends like this. I hope someone knows how to fix it.