So, here’s the situation. I sold a complete PC as used because I didn’t have a receipt for it, and it was a private sale, not from a store. Before shipping, I tested the PC, and everything was working fine. After the buyer received it from the courier, he called me and said the PC wouldn’t turn on.
I went to check the issue and found that the graphics card wasn’t working—the VGA LED on the motherboard was lit. I tested another GPU in the PC, and it worked. Then I tested my GPU in another PC, and it didn’t work. I refunded the buyer and took the PC back home.
At that point, I tried flashing a new BIOS, the one recommended above. However, the P/N didn’t match the one on my graphics card. I don’t know if the buyer did anything with the BIOS—that’s just my assumption. But I do know that he requested me to update the BIOS of the motherboard and other components.
Now, that’s all irrelevant. I just want to try a BIOS from someone who has the exact same graphics card. I hope everything is clear now.