The only reason that comes to mind is that the logo screen is disabled. Although the screen is disabled, you still have a small window to press the corresponding key to enter BIOS. Typically, this button is F2 or Delete. Turn on your computer, or restart if you're using it to read this post. Then immediately and repeatedly press both the F2 and Delete keys. This should get you into your BIOS. Once in your BIOS, find the option to enable the splash (logo) screen.