hi everyone
i have a problem with my 780 gti classified , i made a test with furmark , and as soon as i started the test , it gives me a black screen.
so i had to restart my computer , no other options.
and now the problem grows worse and worse , so i had to remove the card , i think she's dead
 
the worst part of it it's that i can't find the serial number anywher, i called the seller , he said me that it's under the backplate , i doubt that .
do you think that i have to unscrew all the screws to see the sn?
it seems a lot of work for nothing , and i think that the seller removed the sn and he doesn"t want to admit it..
 

he doesn"t have the bill so i have to find the sn , 
 
thanks y'all 

Yes, remove all of the screws that have a silver hole in the backplate. If the screw is actually under the backplate, leave it in. Do not remove the 4 spring screws .

This will allow you to remove the backplate only, and see if the sticker is on the PCB.

Iits 11 screws total.

 

charly kane
wow that was fast , never saw that before..
 
thanks y'all i'm gonna do that today and i'm gonna leave a reply , 
thanks again

          

http://www.evga.com/support/guestregister.asp

Punch in the serial number here. It will tell you have many days are left on your warranty, no receipt necessary.

I suspect the Warranty may be getting close to the end of its life, as the card was released almost 4 years ago.

charly kane
thanks , i just sent an email , waiting for the answer, hope the warranty will be ok , i paid it a lot of money (280$)  , next time i will check for the warranty 
i just installed a new card : ASUS GTX 780 Ti  but not classified (don't know if it's evga though ,  i didn"t see it on the card..)
 
thanks again , you are great

When you punched in the serial number, how many days did it say were left?

charly kane
i don't understand the question 
here is the image of the sn
 

i just received an email in response of mine and it says that i have to send them the invoice , 
the problem is that the seller didn"t give me any invoice , i trusted him , and i now i'm stuck with this gc 
the sn is not enough to fix the card , do i really need the invoice for that?
thanks
 

I looks like you're in luck, the card still has 68 days remaining on the warranty. As it's a second-hand product, and you don't have the invoice, you'll need to use the Guest RMA process. You can get started through the link here.