USB C port completely disables computer
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=19330
Printed Date: 06 Feb 2025 at 12:51am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: USB C port completely disables computer
Posted By: Bmars520
Subject: USB C port completely disables computer
Date Posted: 31 Jul 2021 at 11:41am
I was trying to connect my phone to my computer using a USB C cable, but when I plugged the cable into the computer, the computer immediately shut down. There was nothing connected to the other end of the cable, just plugged it in. When the cable is in the slot the computer refuses to turn on at all. No power, nothing. As soon as I remove the cable everything returns to normal, the computer can be turned on as if nothing even happened. Tried it again to see if it was a fluke and nope. Did it again. Even after the USB C cable is removed you still need to completely disconnect the computer from any power, then plug it back in and turn it on. Does anyone know why this might happen, or how I could fix it?
My motherboard is a Taichi X399
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Replies:
Posted By: Khun_Doug
Date Posted: 01 Aug 2021 at 2:30am
It reads to me as though you have a defective USB-C cable. I suspect the cable is causing some type of dead short, that in turn causes the entire system to close. The PSU is designed to handle dead shorts to prevent damage. That explains why you need to remove the PSU from the AC mains so it can reset.
First step is to try a different USB-C cable.
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