Updating computer bios
Head to the website for your PC's manufacturer—like Dell, HP, or Lenovo—and find the Support page.
Click "OK" or "Finish" and restart your Gateway computer.
Note that navigating this interface can vary a bit from computer to computer, especially if you have a newer machine running a Unified Extensible Firmware Interface, or UEFI (which, despite being more capable than its older sibling, is still often referred to as BIOS).
So while we can't tell you exactly what to click on, the following instructions should get you in the right ballpark nonetheless.
Click the "Select your product model ..." box and click the specific Gateway model that you have.
Verify that you have selected the correct Gateway model and click the blue "Display Results" link.