Help! Asrock b450m-hdv
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=13860
Printed Date: 10 Jun 2025 at 9:32pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Help! Asrock b450m-hdv
Posted By: Juliano
Subject: Help! Asrock b450m-hdv
Date Posted: 15 Mar 2020 at 10:58am
My computer doesn't start!
I recently bought this mb, made the instalation etc.
First i wasnt getting sound from the gpu (was connect trough hdmi).
I tried some things with no result, them i went to the bios. In the advanced page - amd cbs - nb common there was about the discret gpu audio disable, i enabled that. The audio start to work properly.
But because im (very) stupid, i went to the bios again to see the others options. In the amd pbs, trying to known the features, i modify the 'pcie x16 switch' to gen2, and the 'pcie promontory switch' to gen2.
Now the computer doesnt start, i set the jumper to clear cmos, but still nothing.
There is something that i can do?
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Replies:
Posted By: ThreeDee
Date Posted: 15 Mar 2020 at 11:37am
Make sure your power cable is disconnected from your PC or turn the power switch off on the PSU. Then hold the power button down on your PC for a good 10-15 seconds. Then try clearing your cmos via the jumpers and let the jumper sit there for a few seconds .. then power back up your pc and spam the del key. If you still can't get into the bios .. then turn power off/unplug, hold power button again and then pop out your cmos battery and let it sit for a bit .. some say 24hours but I've never had it out for more than a couple minutes and it cleared ..
pop battery back in and fire up your pc and hopefully cmos is cleared now
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|Ryzen 5 5900|ASRock X570 Taichi-BIOS 4.60|2x16GB HyperX Predator RGB 3200@3600 1:1 IF|ASRock RX 6700XT|2 x PCIe 4.0 M.2 Drives for OS & Games|850 WTT Seasonic 80+ Titanium PSU|Noctua NH-D15|
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Posted By: Juliano
Date Posted: 15 Mar 2020 at 11:15pm
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Removjng the cmos battery and leaving out for half an hour solved the problem. Thanks a lot
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