PC Crashed, Flashing Lights and Won't Boot Back Up
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=13559
Printed Date: 08 Aug 2025 at 6:02am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: PC Crashed, Flashing Lights and Won't Boot Back Up
Posted By: ejp619
Subject: PC Crashed, Flashing Lights and Won't Boot Back Up
Date Posted: 31 Jan 2020 at 7:57am
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Help! I was playing a game on my new PC build (I built it about a month ago) when it randomly crashed. No blue screen or overheating, it just suddenly shut off. When I try to turn it back on, the lights on the motherboard (an AsRock B450 Steel Legend) flicker and the power button does not work. I have no idea what caused this or how to fix it. I've waited almost an hour now and I am still having the same issue when I turn on the power supply. What should I do to fix this?
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Replies:
Posted By: Reset
Date Posted: 01 Feb 2020 at 2:16am
I did once.
Set the Clear CMOS Jumper (CLRCMOS2) to clear the BIOS. Then reset it and start the computer.
Greetings
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Posted By: ejp619
Date Posted: 01 Feb 2020 at 6:40am
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I tried clearing the CMOS, but it didn't seem to do anything. For whatever reason, my motherboard doesn't come with the cap you need to use the clear CMOS jumper... I had to take the battery out instead. I kept the battery out for 10 minutes and tested the voltage while I had it. After turning back on the PSU, I was met with the same result. One new thing I noticed is that when I hit the power button, all of the lights come on and the fans start spinning for about half a second, but then they turn back off, and the fans start blinking red. I have no idea what this means or how to fix it...
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Posted By: Reset
Date Posted: 01 Feb 2020 at 4:14pm
How much memory did you use?
You can remove all DIMMs except one (best in A2) and then reset the CMOS again.
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Posted By: ThreeDee
Date Posted: 04 Feb 2020 at 12:57am
Time for a new PSU ..it died on you. Had same thing happen over the years on several different rigs
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