[SOLVED] Nitro Rx480 8GB when put under full load, freezes the system

[Quanta Girl]

I have this Rx480 which i bought used from someone locally has this weird thing going on, when run with a benchmark software or a heavy game (I ran gta v), it freezes the system.
I tried flashing the latest available v-bios from techpower-up "Sapphire.RX480.8192.160603_1.rom"
even flashed bios from another working card, but nothing. So far, i have reached nowhere, but ya, if the load is like 50-60ish% it works fine. Help me if you can. I want to revive this card so bad.
Also the fan has a whiny sound.
GPU: RX 480 8gb
CPU: I5 4460
Motherboard: Gigabyte H81M
RAM: 8Gb Gskill Ripjaws 1600mhz

 

[egda23]

What exact model PSU do you have ?
Does the PC also freeze when you try the same benchmark with another GPU ?

 

[Quanta Girl]

@egda23 I tried it on hx 1200 and now i have a budget 500w unit by ARTIS, and no, the pc doesn't freeze when gpu is swapped

 

[Rodrigodrt]

If the psu is ruled out it could be a faulty card, especially when u say you tried another and all is good...