S2716DG screen going black, power saving mode

model: S2716DG

s/n: CN-0R08JM-74261-646-0NTQ

REV A03

SERVICE TAG:

VIDEO CARD: EVGA 1070 FTW, 3 DP, 1 HDMI, 1 DVI

ASUS VH222H, DVI TO DVI, 1920 X 1080, 60 HZ, 

ASUS VH242H, DP TO HDMI, 1080 X 1920, 60HZ

DELL S2716DG , DP TO DP, 2560 X 1440, 144HZ

WINDOW 7 64 BIT

POWER PLAN: HIGH PERFORMANCE

PURCHASE FROM DELL

Hi, so my problem are that my screen will randomly go black/power saving mode or just just go black and close itself. When it just go into power saving mode, i will need to switch input to hdmi and back to dp and it will be fine most of the time, but sometime the screen will start flicker and go black again or just straight disconnect(hearing the window disconnect sound) and then i wont be able to use any button on the front of the monitor so i need to hard reset with the power cord then unplug/plug back dp cable.

here the thing i did/try:

-reset monitor to factory default

-hard reset of monitor

-different dp port on video card

-new dp cable that is vesa certified

-dp to hdmi cable, this would work, and even now my second monitor is plug that way and no problem at all

-clean install of new driver

-try lower the refresh rate, this would help for a time but problem would come back, even at 60hz and lower

-chat with dell support, but the guy i chat with blame my system from the start and didnt seem to understand when i was telling him the test i did, the only good test in his eye was to test on another system but i dont have another system/video card with dp output, he even offer me to transfer me to the sale service.

and now here i am hoping u can can help me