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Hi newcomer and welcome to the Tom's hardware forum.

The BIOS don't have version x64 or x86 (32 bits), just install the BIOS last BIOS version that you can find in the Gateway's manufacturer web page.

Bear in mind that usually, the PC from manufacturer like HP, DELL or Gateway don't have BIOS update.
Hi newcomer and welcome to the Tom's hardware forum.

The BIOS don't have version x64 or x86 (32 bits), just install the BIOS last BIOS version that you can find in the Gateway's manufacturer web page.

Bear in mind that usually, the PC from manufacturer like HP, DELL or Gateway don't have BIOS update.
 
Solution