Internal SATA Drives show up as removeable media

[piikea]

I was in my computer case to clean dust out & to just look around before I have to change one of the HD's soon. Also went into BIOS to check on UEFI but made no changes. But after reboot ALL 3 internal hard drives show up as removable disks, system began driver software installation of ATA Channel 4 & 5, PCI standard PCI-to-PCI bridge & SD Audigy. Now some playback devices are missing AND the remaining ones don't work. Also USB ports don't work.
I did a System Restore but the problems remain. I could restore w/ an image backup BUT the external drive isn't recognized presumably due to USB problem. Could an internal cable or other hardware not being seated properly cause this? Or some BIOS setting? The attached image of the Gigabyte BIOS screen shown had NEVER appeared before - it was a totally different screen!?


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This thread can be deleted as I've solved the issue (though idk how or why it occurred).

 

[accwlo]

Looks like something has triggered BIOS to revert to default settings. Like fresh copy. Just go back there and manually set everything as normal users sets.
I have similar problem with my HP laptop, where I have Win7 on MBR HDD, but sometimes system does not starts because HDD is missing. It is because settings in BIOS goes back to W8 UEFI (predefined). BIOS silently gets updates and reverts to default state which terrifies me to witness that computer gets silently updates without even mentioning of such.
Apparently there is a reason why company is named HP (horrible product)