Jump to content


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.

Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.


Fans running, LEDS on case lit when PC powered off.

  • Please log in to reply
1 reply to this topic

#1 luv2roq


  • Members
  • 10 posts
  • Local time:08:08 AM

Posted 14 June 2013 - 08:37 PM

I hope that I am posting to proper forum topic here, but I just finished a new build with the following specs:

Asus P8Z77-V Mobo
Intel i5 3570K unlocked CPU
Xigmatek Durin D982 heatsink/fan for CPU
Asus video card - GeForce GT 640 (2GB DDR3)
16 GB RAM, Crucial Ballistix, DDR3 1600 (2x8GB)
CoolerMaster Silent Pro M 850w PSU
Toshiba 500 GB HDD 7200RPM SATA 6.0 gb/s
Asus DVD optical drive, SATA
2 case fans

In any case, my system is booting fine, and I just got Windows 8 64 bit installed, but my concern is that as soon as i flipped the switch on at the back of the power supply, it started up my fans, and both LEDS at front of case lit up. But I had not powered on system. So then i booted, and worked a little bit, and when I shut it down, the LEDS stayed lit, the fans still ran AND the fan in the PSU kept running - and did not stop until I flipped the switch at rear of PSU off again. The only fan that did not keep running was the CPU heatsink fan.

My case Fans are connected directly to the motherboards case fan connections. I have the PSU plugged in at both the 20+4 connection and the 12v 4+4 connection.

I don't know what other info you may need to be able to help me out, but does anyone know what I need to do to stop fans and turn off LEDs when I power my computer down? It is something I need to set in BIOS? I know there are a lot of power settings in there, but I figured I would ask first. Electrical issues are not ones I have any knowledge of....Any help would be great! Thanks


BC AdBot (Login to Remove)


#2 dpunisher


  • BC Advisor
  • 2,234 posts
  • Gender:Male
  • Location:South TX
  • Local time:10:08 AM

Posted 14 June 2013 - 09:19 PM

 Reset BIOS.  See if there is some sort of fan timer option in BIOS.

Unplug case power switch.  Same symptom?

On the 8 pin connector by the CPU: Both plugged in smoothly?  With both connectors seated, one row of yellow(+) and one row black(-)?  Unplug one 4pin at a time, boot. 

Try another PSU.  After that, pull the board out of the case, ck again.


Shotgunning here.  

I am a retired Ford tech. Next to Fords, any computer is a piece of cake. (The cake, its not a lie)

3770K @4.5, Corsair H100, GTX780, 16gig Samsung, Obsidian 700 (yes there is a 700)

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users