Sony VAIO VAIO MicroTower User Manual page 65

Replace the bottom and left-side panels, as described on pages 68 and
70, respectively.
To run the Setup utility, press F3 when your computer is starting up.
Then press F1 to run the BIOS setup utility.
Change the default values to the values you wrote down in step 2.
Save your Setup changes, and then exit the Setup utility.