bryceproberts :
Black Friday curses on me too. Hooking up a Radeon 480X card PC to my brand new Samsung smart tv and same problem. Can see bios and the load screen but at login I get no signal. None of the easy suggestions above work (unplug, switch ports) Not trying to go to Windows 8.1 and not trying to mess with drivers. My PC worked just fine with an HDTV 2 days ago, now I’ve got nothing.
shawnmoch :
dlcopeland :
hey Max38, did you ever get this figured out. I have the same problem!
I just bought a Samsung 40 inch today.. Just got it home and same shizzle. It shows the boot, then Windows logo but when it gets to the logon screen, the screen goes black and then the hdmi port and says "No Signal"
I don't know wth Samsung is doing but this is not a good look. It is like the exploding phones that had a couple of years ago but worse. You can't hook your pc up to this stupid TV. What do you need a 4K HDMI cable or what. I'm going to pick up a 4k HDMI cable and see if that works. Will come back with an update.
My background is in I.T. software/hardware and networking if anyone was wondering. O.K.
After a long review and searching high and low, I believe I found the answer. The Samsung 4K T.V's are using HDMI 2.0. You can get the new 4K HDMI cables or the HDMI 2.0 cables. I, frankly, don't know the difference between the two but it would seem that the 4k cables are the latest out and will last you a while.
My issue was, I have a Nvidia GTX 770. (yeah - I know) it has a HDMI port (probably 1.4) and it has 2 DVI ports and a Displayport (which is what is important) The Displayport 1.2 port, which looks like a large version of a HDMI port, is responsible for putting out the highest resolution for my video card. Something like 4500 x 3600.
1. But to get to use 4K, the resolution has to be set to 3840 x 2160 with 60mhz.
2. You can buy an adapter that actively or passively converts the Displayport to HDMI 2.0 or 4k and you plug in a HDMI 2.0 or 4k cable into that adapter. Newegg or Amazon or EBay.
3. You can buy a cable that is a male Displayport 1.2 at one end and a male HDMI 2.0 or 4K at the other end. Found at Newegg the cheapest 5 bucks per cord.
Recap.
A. Use the monitor you have and set computer resolution to 3840 x 2160 with 60mhz refresh rate before you connect to the 4K T.V.
B. Learn what connection you have on your P.C. or what ever you have that will be going into the HDMI port of the T.V. and make sure that you either have an adapter or cable that converts your signal from the old technology actively or passively to the HDMI 2.0 or 4K format so that the T.V. can recognize it.
C. Before starting any of this, make sure your computer has the latest video card drivers installed.
Hope this helped. I now have to wait 5 to 7 days for my parts to arrive. Will update after I get everything installed.