Asus r9 290 Black screen problem/ random lines

[MrOkram]

Hi, i have a R9 290, the one with the original cooler, so my temps are abut 90c, nevertheless i have a encountered a big problem recently, from time to time randomly i will get a black screen, and i need to reboot, but during a reboot sometimes i'll get a big fat line on the left side of the monitor, sometimes random lines, and after that it won't boot, i need to restart PC several times ti get it to work, the performance in GPU have't decreased at all, they stayed the same
My Pc config is next:
Intel i5-4670k
8GB RAM, 1x4GB, 2x2GB
2TB HDD, 2x500GB, 1x1TB
800W Gold plus PSU
Gigabyte GA-H97-HD3
I tried some solutions like declocking the GPU and Memory clock, giving it more V on Core, and completely reinstalling AMD drivers using DDU.
Here are the pictures: http://prntscr.com/bycbuo
http://prntscr.com/bycczl
I would like to know if there is some chance of fixing it or should i just give up.

 

[HeeBeeJeeBee2287]

You could try reflowing the GPU or if you still have a warranty I'd send it in and get it replaced.