Custom PC will not boot windows or Linux from USB

Mar 7, 2018
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Hi all,

I have a custom built PC that I cannot get to boot any OS from a USB. I’ve tried to boot the windows media creation tool and the most recent distro of Linux Mint. With the windows installs, it attempts to boot and immediately reboots. With Mint, I can get the bootloader, but no matter if I choose standard, compatibility, or the OEM installer, it also immediately reboots. I’ve replaced the RAM, and gotten a second motherboard, neither of which yielded any results. I’ve run memtest and 0 failures. All of my hardware is detecting in BIOS. I’m absolutely stumped. Specs are as follows:

AMD A8-9600 Bristol Ridge Quad-Core 3.1 GHz Socket AM4 65W AD9600AGABBOX Desktop Processor Radeon R7
EVGA NVIDIA GeForce GTX 1050 Superclocked GAMING 2GB GDDR5 DVI/HDMI/DisplayPort PCI-Express Video Card
Seasonic M12II Bronze 520W 80Plus Power Supply
CORSAIR Vengeance LPX 8GB (1 x 8GB) DDR4 DRAM 2400MHz C16 (PC4-19200)
WD RE4 1 TB Enterprise Hard Drive: 3.5 Inch, 7200 RPM, SATA II, 64 MB Cache
ADATA SU800 128GB 3D-NAND 2.5 Inch SATA III
MSI ProSeries AMD Ryzen A320 DDR4 VR Ready USB 3 micro-ATX Motherboard

I have tried so much. I’m absolutely at a loss as to what to do. Any help would be greatly appreciated!!

UPDATE: MSI has a “board explorer” feature in BIOS. As far as I can tell, if it detects something plugged in, it’s shaded in on the diagram. It detects all my components, but the power connectors for the CPU AND the motherboard (ATX 12v) are not shaded in. What could that entail?
 
Solution
In settings > advanced > USB configuration

XHCI Handoff, try toggling it to the opposite either enabled or disabled

Legacy USB support, try disabled
Mar 7, 2018
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I’ve done that, For both Linux and windows. Nothing.
 

jr9

Estimable
- Disable Secure boot

- If you create a UEFI only Windows 10 USB (rufus, select GPT UEFI), manually target the flash drive and select UEFI boot.

- Verify the flash drive works on another PC.
 
Mar 7, 2018
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I’m unsure as to whether or not I need to do GPT for it. Since it’s a modern mobo it should be a UEFI installer right? Because I’ve tried that and it STILL bootloops..
 

jr9

Estimable
If it's a new platform like AM4 and Windows 10 there is no reason to do MBR/Legacy/Non GPT install of Windows even of the motherboard supports it. I would try this approach:

- Create a bootable ISO USB with Rufus, "GPT scheme for a UEFI computer" using the official Windows 10 ISO.
- Disable legacy support/CSM in BIOS settings.
- Boot into BIOS, manually select the flash drive from boot devices, select "UEFI: Flash Drive Name"
- Boot to Windows 10 image, install in UEFI mode. Format partitions to GPT.
- Install Windows to GPT partition.

The only time there is a point doing a non UEFI Windows 10 install is on ancient hardware.
 
Mar 7, 2018
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I’ve got a flash drive with a GPT partitioned Windows 10 installer. Still bootloops.
 

jr9

Estimable
Really sounds like a BIOS settings problem. Again if Secure Boot isn't disabled then make sure it is. I'd try disabling fast boot as well. I don't know what your BIOS pages look like and MSI did a terrible job with the BIOS manual for that board (or lack thereof) so try rooting through the settings seeing if you can find something.

Are you actually able to get to the Windows setup program?
 
Mar 7, 2018
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I’m entirely unable to. It gives me the little loading circle of dots for roughly a second then reboots.
 
Mar 7, 2018
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If it helps, my mobo’s BIOS is the MSI click bios 5. I cant find anything about fast boot but I turned on Windows 10 WHQL Support and it gave me secure boot options. So it’s disabled. No luck though.
 

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