How can I change my BIOS splashscreen?
This will not work as the splash screen is saved onto your BIOS. The only way is to flash it across.
I have never tried this, but I am pretty sure that this will work; no guarantees though.
Install WinRAR, a extracting software that has a free trial download, which is all you need.
Hunt around your laptop maker's website and look for a download of the latest BIOS for your laptop. Download it and place it in its own folder.
Right click on the file and choose "extract files" (this is where WinRAR comes in). Extract them and look around for a .gif file; you may need to extract some other files that you just extracted. You can extract almost any .exe file that is in the download.
Go through all the .gif, .jpg, .png files that you found and find the one that is shown when your computer boots up.
Replace the file with a new image file of the same name and extension.
After you have done that, now you have to package it all together. Select all the files, right click, and choose add to archive. Check create sfx archive, then click okay.
Double click on the file you just created!
Warning: I would not reccomend this unless you have something that can restore your BIOS, if such a thing exists.