Print Page | Close Window

Z77 OC formula CPU LED RED

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=2086
Printed Date: 06 Sep 2025 at 2:18pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com


Topic: Z77 OC formula CPU LED RED
Posted By: spacegy4
Subject: Z77 OC formula CPU LED RED
Date Posted: 27 Feb 2016 at 2:13am
The LED by the voltage test points labeled CPU is on.  There was no extra strain on the CPU between when it worked last and now

When I push the power button the CPU fan spins, but the chassis fans, and the fan on the VRM heatsink do not spin.  There is no post, and no output displays on the screen (not black screen) no debug codes or beeps

Any help would be greatly appreciated.

The last thing I did before the problem occurred was remove the RAM and re-seated it

specs: 
i7 3770 (non k)
corsair dominator ddr3 1600 4x8GB
gigabyte GTX770 windforce
OCZ 750W power supply

Troubleshooting I've done:
clear cmos/backup bios/remove and replace battery
Unplugged and removed everything aside from the PSU
With only the power supply connected and nothing else (no ram) there were no debug codes or beeps (same behaviour)
Removed the CPU and examined the pins (they appeared to be undamaged)
and replaced it in the socket (same behaviour when I push power)


I've found a couple posts with a similar issue that appeared to be mostly unhelpful, but maybe you can glean something from them that I didn't
http://forums.tweaktown.com/asrock/57207-cpu-led-red-cpu-mb-formula-oc-z77-new-build.html

http://forums.tweaktown.com/asrock/53729-z77-oc-formula-wont-power-up.html

http://www.overclock.net/t/1415886/problem-booting-with-asrock-z87-oc-formula



Print Page | Close Window

Forum Software by Web Wiz Forums® version 12.04 - http://www.webwizforums.com
Copyright ©2001-2021 Web Wiz Ltd. - https://www.webwiz.net