Question Is my Gpu dead?

www.tgkaveh

Commendable
Feb 6, 2019
32
0
1,530
Hi. Sorry for bad english
I have following System:

Cpu: Intel Core i5 9400f
Mbd: Gigabyte B360m Ds3h
Gpu: Gtx 1080ti Msi Aero Oc
Ram: 16gb ddr4 Corseir & Crucial
Ssd: Adata Sx6000 Lite 128gb
Hdd: Seagate Baracuda 1tb
Pwr: Coolermaster 650w Boronze

I have gpu problem: i check everything but the gpu show me black screen in 640x480 resulation: no difference in hdmi or dvi port or any other monitor. I checked the gpu in new system but no difference. Is my gpu repairable or die forever?