7 monitor sim troubles

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hello there, so ive got an old 6700 cpu with:

 

-Geforce 970 with 4 monitors connected:

  ´Three of them count as 1 display thorugh straight dp ports ( Nvidia Surround mode )

  ´4th one through straight hdmi.

 

-Geforce 750ti with 3 monitors:

 ´One thorugh Vga adapted to DVi to the card

 ´One straight DVI

´One straight hdmi

Works well and therefore i dont want to dispose of it yet so ive build a new system which consists of:

 

12700k with:

-Geforce 980ti with same as above 4 monitors:

´Three of them count as 1 display thorugh dp ports ( Nvidia Surround mode )

  ´4th one through hdmi.

 

BUT TROUBLES STAR HERE:

Geforce 730 

One monitor straight DVi

One monitor straight Hdmi

AND WHEN I CONNECT THE LAST MONITOR STRAIGHT VGA THEN THE MONITOR IN THE 980TI CONNECTED THROUGH HDMI DISCONNECTS.

is there any way to fix this? i dont want to uninstall the 750ti in the old computer before running out of options.

 

Many thanks in advance.