MSI B75MA-P45: Can't boot with SSD

So I've installed Windows 10 to my SSD via USB. Got activated, drivers sorted, personalised it a bit... All good and dandy.

Went to restart for the sake of hypothetical cleanliness after installing and all... I can't boot with the SSD.

Having read other threads, so as to save time and effort:
- The SATA mode is set to AHCI
- My BIOS doesnt have a Secure Boot option, so I'm led to believe that it isn't the issue, although I'm sure I could be wrong
- I've made sure that the drives are set as the first boot preference
- The boot preference is set to the SSD specifically, although no other drives are plugged in at present anyway
- It's plugged into the first SATA port

Any and all help would be appreciated. Thanks!
Reply to Douglas Bacon
10 answers Last reply Best Answer
More about msi b75ma p45 boot ssd
  1. When you install Windows to the SSD, were any other drives (SSD or HDD) attached to the system?
    Reply to COLGeek
  2. There was not, COLGeek.
    Reply to Douglas Bacon
  3. I have. It's the same result.
    To clarify, it's asking me to "Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key_".
    Earlier on I attempted the bootrec and mbr commands as well, no dice.
    Reply to Douglas Bacon
  4. You may need to perform a a secure erase and then completely reinstall Windows. The boot record seems to be the issue.

    Is this a new SSD? What make/model is it?
    Reply to COLGeek
  5. Just to verify something from your original post. You booted and installed Windows from a USB drive, with the SSD installed in your computer (attached to a SATA or m.2 port) , is that correct?
    Reply to COLGeek
  6. A 120GB Sandisk SSD. Afraid I don't know the model, and can't find it on the drive itsel. I can give you the boot name, SanDisk SDSSDA120G, although I'm unsure if that'll help.

    Via SATA, and aye that's correct.

    How would one go about doing a Secure Erase? The link you provided didn't seem to say how to get to the point of peforming one?
    Reply to Douglas Bacon
  7. You can purchase for $11 here. Several mods use this product and swear by it.

    Sandisk offers help here as well:
    Reply to COLGeek
  8. Best answer
    Well... I was having a play with variour options, and it turns out that all I needed to do was change...

    Boot Configuration:
    Other PCI device ROM priority

    ... From 'LegacyOpROM' into 'UEFIOpROM'.

    Then I had 'UEFI: Windows Boot Manager' as a boot option thereafter, and I've had that selected since with no issues. Windows 10 is booting fine from the SSD now.

    Edit: I'd select this as the answer... But apparently I can't. Don't know if a mod could do that for me?
    Reply to Douglas Bacon
  9. Well done.
    Reply to COLGeek
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