Basic Description
Windows 3.x displays a splash screen during startup. It is included in WIN.COM, which again is made out 3 source files. One of these source files is called VGALOGO.RLE.There are also logo files for EGA and Hercules displays. How these are stored is not covered here. Actually, I just don't know.
Other files than ...LOGO.RLE with the .RLE extension are most likely in a different file format. Windows 95 uses SYS files