GPU sudden low hash rate ....return to shop with what reason?

[Aureliusy]

I have a 5 GPU setup 1x 7850 1Gb 2x 7850 2Gb and 2 7790. 1200Watt
The 7850 Cards get 73 degrees max  No overclock

After 2 months the 7850 1GB suddenly does not give more as 50 kb (360 is normal).
Display driver crashed a lot Removed it for some time and still the same
Is the card broken and Should I be able to return it and if so what reason should I give when returning it (its 2 months old).
Low hash rate( Mining capabilities crippled) or .....a non mining related reason...if so which one.

Thank you.

[kuusj98]

Can it run Games?
Just try and see if it crashes the driver, if so, just say it crashes all the time.

[Magazine]

Maybe you just ran it for too long and it overheated, did you run it with suitable cooling. I doubt the store will take it back after two months but you can try I guess. Depends where you bought it from, let us know how it goes.

[YipYip]

I have a 5 GPU setup 1x 7850 1Gb 2x 7850 2Gb and 2 7790. 1200Watt
The 7850 Cards get 73 degrees max  No overclock

After 2 months the 7850 1GB suddenly does not give more as 50 kb (360 is normal).
Display driver crashed a lot Removed it for some time and still the same
Is the card broken and Should I be able to return it and if so what reason should I give when returning it (its 2 months old).
Low hash rate( Mining capabilities crippled) or .....a non mining related reason...if so which one.

Thank you.

Say ...its "FUCKED" is the technical term i use in situiations like this