NVMe SSD reboot issues

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   I just installed my first NVMe drive into the M.2 slot on my ASRock Phantom ITX. I used the slot on the front of the motherboard.

After some Windows install woes, I finally got it up and running. However, whenever I reboot from Windows, I get stuck at my mobo's splash screen (the one where it says press delete to enter UEFI) and the hard drive light remains solid for a good 20 seconds. It then gives up and goes to the next boot option (either the next drive or if no drive, straight into UEFI).

If I go into UEFI before it freezes at the splash screen, then exit, it boots up fine. A cold boot from a power off state also works perfectly fine.

Any ideas why this is happening? The only UEFI option I changed is "Launch Storage OpROM Policy". I set it from legacy to UEFI only because some article recommended setting that for NVMe windows installation. Not sure if that's related.

Also, there are two drives listed in my UEFI boot options:
Windows Boot Manager (PCIe SSD)
PCIe SSD

I have the Windows Boot Manager one selected. Is that correct?

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TwistedMetalGear Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 31 Mar 2019 Status: Offline Points: 3	Post Options Post Reply Quote TwistedMetalGear Report Post Thanks(0) Quote Reply Topic: NVMe SSD reboot issues Posted: 31 Mar 2019 at 2:20am
	I just installed my first NVMe drive into the M.2 slot on my ASRock Phantom ITX. I used the slot on the front of the motherboard. After some Windows install woes, I finally got it up and running. However, whenever I reboot from Windows, I get stuck at my mobo's splash screen (the one where it says press delete to enter UEFI) and the hard drive light remains solid for a good 20 seconds. It then gives up and goes to the next boot option (either the next drive or if no drive, straight into UEFI). If I go into UEFI before it freezes at the splash screen, then exit, it boots up fine. A cold boot from a power off state also works perfectly fine. Any ideas why this is happening? The only UEFI option I changed is "Launch Storage OpROM Policy". I set it from legacy to UEFI only because some article recommended setting that for NVMe windows installation. Not sure if that's related. Also, there are two drives listed in my UEFI boot options: Windows Boot Manager (PCIe SSD) PCIe SSD I have the Windows Boot Manager one selected. Is that correct?

simonv Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Mar 2019 Location: NL Status: Offline Points: 13	Post Options Post Reply Quote simonv Report Post Thanks(0) Quote Reply Posted: 01 Apr 2019 at 3:10am
	I used this forum article to install Windows 10 64-bits on a H370M-ITX/ac motherboard http://forum.asrock.com/forum_posts.asp?TID=1236&title=how-to-install-windows-on-a-pcie-ssd I installed on a Samsung EVO970 NVMe drive as boot disk

simonv Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 20 Mar 2019 Location: NL Status: Offline Points: 13	Post Options Post Reply Quote simonv Report Post Thanks(0) Quote Reply Posted: 01 Apr 2019 at 3:14am
	BTW, I used Method 2 from the forum article CSM option=Disabled