Hello Sumpter! Welcome to PCHF
When does it ask for the system disk? Is it the very first thing you see when you turn the computer on? If so, you should try consulting the motherboard manual and/or the website and/or contact them directly by phone to see if there is a way to reset the BIOS to factory settings.
If it passes the MSI splash screen and the POST test, then asks for the disk, then it may be as simple as a system restore. Please note a system restore means wiping the hard drive entirely of all the data, so if you have important stuff, you'll want to back it up first by hooking the HD up to a working computer and copying the files from there.
Hope that info helps!
