B450M Pro4 Help

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   Where do you have the boot USB drive connected?  Are there other USB peripherals connected nearby?  I have had a mouse and a USB drive connected to adjacent ports on the front of a case and both items didn't work.  Once I moved the mouse to a port on the back of the case (that is, directly on the motherboard), both devices worked.

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Vulpie05 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 26 Dec 2018 Status: Offline Points: 64	Post Options Post Reply Quote Vulpie05 Report Post Thanks(0) Quote Reply Topic: B450M Pro4 Help Posted: 21 Aug 2019 at 1:24am
	Where do you have the boot USB drive connected? Are there other USB peripherals connected nearby? I have had a mouse and a USB drive connected to adjacent ports on the front of a case and both items didn't work. Once I moved the mouse to a port on the back of the case (that is, directly on the motherboard), both devices worked.

pinklysmoothest Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 21 Aug 2019 Status: Offline Points: 3	Post Options Post Reply Quote pinklysmoothest Report Post Thanks(0) Quote Reply Posted: 21 Aug 2019 at 12:06am
	Hey all, I assembled a new PC with a B450M Pro4 mobo & Ryzen 3400G CPU recently, but haven't been able to install an operating system. When I power it on, the fans spin, and a screen with the ASRock logo and a list of F keys to press for different options appears. From here, I'm able to access the BIOS-- all that I've changed in here was the RAM speed (to increase it to 3000) and the boot order (to put USB first). I've tried several times to boot from a USB (using two different sticks: one with a Windows 10 image that I've never otherwise used, and one with a Linux Mint 19.2 image that I had successfully used to install Mint on a laptop), but when I try this, it only displays a black screen after briefly showing the ASRock logo screen. When I tried to run the driver CD included with the motherboard (turned the system on and selected the optical drive in the boot menu), it gave a black screen asking me to put installation media in the selected drive and press any key. Reinserting the disk did nothing; I had to restart. I've updated the BIOS to v3.50 using a USB stick, and I ran memtest86 (on like a 6th different USB stick) and found no errors. Any ideas on what could be causing this? I've posted around Reddit a couple times and was advised to check here.