purple tint

i opened today my pc monitor and had a purple tint and it's refreshrate drops down to 0 every 5 seconds. has a purple line to the top. under that line monitor drop the refreshrate and over that line works fine. i can see the frames change under the line . i have msi 1660 ti with hdmi to vga...

I'm building a new computer which I am going to use for mostly gaming or internet things. My specs currently are: Intel Cofee Lake i3-8350k, gtx 1070 8gb, 16 gb 3200 mhz ram, 500 gb ssd, no hdd yet. I don't know if the i3 will bottleneck the 1070 but I could swap it for i5-7500 or amd ryzen 5 1600.