Solved Asus B350 Prime Plus takes ages to POST

August 16, 2019 at 16:03:16
Specs: Windows 10, AMD Ryzen 5 1600/16GB Crucial Ballistix 3000
Hi, I have a system with the following specs:
AMD Ryzen 5 1600, 16GB Crucial Ballistix DDR4 3000MHz, Asus Prime B350Plus, Samsung M.2 256GB NVME SSD, Antec 620W power supply, MSI Radeon 285.
I built the system in late 2017, everything fine. Occasionally the RAM overclock (DOCP at its default settings (3000MHz)) would fail and the board would fail to POST so I needed to re-enable it.

A couple of weeks ago the board stopped posting normally, it would take in excess of 4 minutes to do so, displaying a blank screen or the ASUS logo.
Enabling o disabling DOCP hasn't resolved it. Once it boots to windows 10 it runs perfectly fine.
I have updated the BIOS twice and now it's on the latest version, which dates back to three weeks ago.

I have also reset the BIOS to default values to no avail
Any ideas? Thanks

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August 16, 2019 at 16:24:39
✔ Best Answer
BIOS defaults are just a starting point. Now that the defaults are loaded, you should run thru all the settings & adjust as necessary to best match your hardware configuration. Do not overclock during troubleshooting.

For the POST issue, try disconnecting all external devices except the monitor & keyboard. Also disconnect the SSD & optical drive (if you have one), and remove any add-in cards except for graphics. Now try to boot & see how long it takes to POST. If it POSTs normally, something you disconnected is causing the problem.

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August 16, 2019 at 22:01:00
In addition to the above advice, I suggest you remove the RAM sticks one by one and clean them with a pencil eraser. Then snap them in and out 4 or 5 times each to burnish the contacts.

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August 17, 2019 at 01:10:40
Are there any clues in the Event-Viewer?
Is your SSD drive (OS on M2-Drive?) more than 75% full?
Check SSD with Samsung test tools.

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August 17, 2019 at 09:11:12
Thanks for the tips. I'll try them later and post back. Yeah, windows is installed on m.2 ssd. I'll try Samsung utilities. Although windows boot time is as fast as ever

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August 18, 2019 at 16:15:49
Well, it turns out the DVD drive was the cause... I just unplugged it and POST behaviour returned to normal!

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