Installed new GPU and recommended resolutin is 3840 x 2160 but keeps going back to 1920x1080
I just installed MSI GeForce GTX 1050 Ti  replacing [ASUS GeForce 9500 GT]
I know the new card can run 4k and my display is a 4k tv.
When I try to change the screen resolution to the recommended setting 3840 X 2160 and press apply okay. It states the resolution is 3840 X 2160, but when I go back to my screen resolution setting I see my resolution is back to 1920 x 1080.
I also went to Nvidia Control Panel and try to change the resolution to 4k x 2k, 3840 x 2160 (native) the screen goes black and reappears and res. setting is still 1080p, 1920 x 1080
Not sure why I can't seem to make my computer to display in 4k.
This is the rest of my specs: [VIZIO SmartCast™ E-Series 43" 4k version Display]. [Intel Core i7-870 Lynnfield Quad-Core 2.93 GHz CPU] [ASUS P7P55D-E Pro LGA 1156 Motherboard] [Western Digital Black WD1001FALS 1TB HDD] [Sony Optiarc CD/DVD Burner] [CORSAIR TX Series CMPSU-750TX 750W PSU] [Rosewill CRUISER Black Gaming ATX Mid Tower Case ]