Notices

Overclockers Forums > Hardware > Power Supplies and Electronic Devices
Power Supplies and Electronic Devices
Forum Jump

POST Code 21: PSU or MotherBoard?

Post Reply New Thread Subscribe Search this Thread
 
 
Thread Tools
Old 07-04-12, 06:15 PM Thread Starter   #1
BlackSlimeMan
Registered

 
BlackSlimeMan's Avatar 

Join Date: Oct 2006

 
POST Code 21: PSU or MotherBoard?


Need some help guys. Got home, powered up, some slight flicker, and then just a blank screen.

Looked at the Award POST on my eVGA 780i which stayed at 21. Something to do with "Init. Heuristic Power Management". Unplugged all USB devices, even a graphics card, and two sticks of RAM, did resets on the BIOS still no boot, still 21.

I can't even get into BIOS to change power management options, but I wasn't overclocking voltage at all.

I think it's my 850 PSU, but it will light up, run the fans, and power lights on the board. My thought is I tasked out the PSU one too many times and it's giving up the ghost after 5 years, but would it even run? And since it runs would I have enough juice to power my system at half the equipment? Or is caputs altogether?

Or is it my motherboard not letting me even into BIOS?

Appreciate any help and advice. I'm thinking it's new PSU time.

__________________
EVGA nForce 680i SLI 775 EVGA nForce 780i SLI 775
Kingwin Lazer 1050 XCLIO 850
4 x Ballistix 1G DDR2
Intel Core 2 Quad
3500 250 WD Corsair IDE
5000 500 2.5 WD SATA
2 x 7200 400 WD SATA
2 x LiteOn Lightscribe DVD Drives
2 x Nvidia 8800 GTX
Windows 7 Ultimate 64x
BlackSlimeMan is offline   QUOTE Thanks
Old 07-04-12, 06:18 PM   #2
Bobnova
Innocent Senior Member



 
Bobnova's Avatar 

Join Date: May 2009
Location: Humboldt

 
Light the thing off and check the voltages the PSU is putting out.
All black wires are ground, stick the black wire of the multimeter into one of 'em.

All yellow wires should be 12 V, +/- 5%.
All red wires should be 5 V, same 5%.
All orange wires should be 3.3 V, 5% again.

If the 12 V rail (for example) were running around 9 V it would still run fans and lights, but the motherboard would probably not appreciate it much.

__________________
"Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe." -- Einstein (maybe)


How to check your PSU with a multimeter.

17bXw5t51rEBXGavJFMJsC8g7HQgThUGc7

Heatware.
Bobnova is offline Author Profile Benching Profile Folding Profile Heatware Profile Rosetta Profile   QUOTE Thanks
Old 07-12-12, 07:01 PM Thread Starter   #3
BlackSlimeMan
Registered

 
BlackSlimeMan's Avatar 

Join Date: Oct 2006

 
Well poopie.

I just spent 160 on a new power supply with modular cables, and tada it's not the power supply. I'm going to keep this one anyway just to be on the safe side. I've been on the edge with the 850 and my components.

Ended up searching around, Award POST 21 on my board seems to end in RMA's. I'm 5-6 years out of RMA so, I went into a deep depression. Started searching in vain for my 780i, hoping it would be cheap. Even on eBay still 150ish. Found a 680i within 15 mins of looking for 780, bought it for 16, altogether with shipping 31.

The new "older" board is currently what I'm typing on. Not the fix that I was hoping for, but it'll have to do. Maybe I can save up and venture out of 775 sockets. Just sucks my 780i's gone. I was bragging about it too.

I'm currently cleaning my 780i. Found out I was too happy with the thermal paste last time. Some of it got down into the CPU socket. Until I'll get it cleaned I won't know if that was what sent my board afry. I'm going to try the 780 once more before I completely let it go. But for now, I'm back to work again, and maybe planning for my next build. It has been 5-6 years. Anyone got any advice on paralleling six core i7's?

-BSM

__________________
EVGA nForce 680i SLI 775 EVGA nForce 780i SLI 775
Kingwin Lazer 1050 XCLIO 850
4 x Ballistix 1G DDR2
Intel Core 2 Quad
3500 250 WD Corsair IDE
5000 500 2.5 WD SATA
2 x 7200 400 WD SATA
2 x LiteOn Lightscribe DVD Drives
2 x Nvidia 8800 GTX
Windows 7 Ultimate 64x
BlackSlimeMan is offline   QUOTE Thanks
Old 07-12-12, 07:13 PM   #4
RollingThunder
Destroyer of Spammers, Trolls and Cretins
Premium Member #12

 
RollingThunder's Avatar 

Join Date: Jan 2005

 
Quote:
Originally Posted by BlackSlimeMan View Post
Well poopie.

I just spent 160 on a new power supply with modular cables, and tada it's not the power supply. I'm going to keep this one anyway just to be on the safe side. I've been on the edge with the 850 and my components.

Ended up searching around, Award POST 21 on my board seems to end in RMA's. I'm 5-6 years out of RMA so, I went into a deep depression. Started searching in vain for my 780i, hoping it would be cheap. Even on eBay still 150ish. Found a 680i within 15 mins of looking for 780, bought it for 16, altogether with shipping 31.

The new "older" board is currently what I'm typing on. Not the fix that I was hoping for, but it'll have to do. Maybe I can save up and venture out of 775 sockets. Just sucks my 780i's gone. I was bragging about it too.

I'm currently cleaning my 780i. Found out I was too happy with the thermal paste last time. Some of it got down into the CPU socket. Until I'll get it cleaned I won't know if that was what sent my board afry. I'm going to try the 780 once more before I completely let it go. But for now, I'm back to work again, and maybe planning for my next build. It has been 5-6 years. Anyone got any advice on paralleling six core i7's?

-BSM
Blacky,

One time I too was generous with Arctic Silver on an AMD Opteron and some of it ran down one side into a few CPU pins: No post.

A thorough cleaning with a swab / pipe cleaner and alcohol (couple times) while cursing and swearing cured my blunder.

__________________
Intel E8500 @ 3608 MHz...............Intel E7500 @ 3333 MHz Home Server
DFI DK P45 T2RS Plus.................Same
WD Velociraptor 150 & WD Raptor 74...Raptor 74 - Hitachi Deskstar 1TB
ATI 5750.............................ATI 6200FX
Dell Ultra Sharp U2413.............. Dell Ultra Sharp 2007 1600x1200
2 x 2 GB GSkill PC8500 @ DDR2 960....2 x 1 GB GSkill PC8500
Corsair HX520........................Corsair HX520
Coolermaster NV 690..................Lian-Li PC-K7
Vista 64.............................XP Pro
Experience teaches only the teachable.
RollingThunder is offline   QUOTE Thanks
Old 07-12-12, 07:19 PM Thread Starter   #5
BlackSlimeMan
Registered

 
BlackSlimeMan's Avatar 

Join Date: Oct 2006

 
Quote:
Originally Posted by RollingThunder View Post
Blacky,

One time I too was generous with Arctic Silver on an AMD Opteron and some of it ran down one side into a few CPU pins: No post.

A thorough cleaning with a swab / pipe cleaner and alcohol (couple times) while cursing and swearing cured my blunder.
That's what I'm hoping for too. Pipe cleaner is good for down in the pins? I'm having a fun time removing the paste in there. Dynex paste isn't very forgiving either. My system has been so good to me. I don't want to lose my original build this soon.

__________________
EVGA nForce 680i SLI 775 EVGA nForce 780i SLI 775
Kingwin Lazer 1050 XCLIO 850
4 x Ballistix 1G DDR2
Intel Core 2 Quad
3500 250 WD Corsair IDE
5000 500 2.5 WD SATA
2 x 7200 400 WD SATA
2 x LiteOn Lightscribe DVD Drives
2 x Nvidia 8800 GTX
Windows 7 Ultimate 64x
BlackSlimeMan is offline   QUOTE Thanks
Old 07-17-12, 07:54 AM   #6
oscarbravo
Registered



Join Date: Jul 2012

 
Hi try some isopro (can't think of rest of letters) what you use for cleaning wounds etc same as whats in the cleaning tissues for cuts can get in a bottle from drug store is good for cleaning pc bits or ive acetone liquid i use for cleaning poo paste and heat sinks with.
that will clean it for you.
theres plenty of 775 boards around still im on a rampage formula ive a 680i EVGA one here in a box still.same one you have just got i think.
So never fear your not alone.
oscarbravo is offline   QUOTE Thanks

Post Reply New Thread Subscribe


Overclockers Forums > Hardware > Power Supplies and Electronic Devices
Power Supplies and Electronic Devices
Forum Jump

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Mobile Skin
All times are GMT -5. The time now is 03:12 AM.
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
You can add these icons by updating your profile information to include your Heatware ID, Benching Profile ID or your Folding/SETI profile ID. Edit your profile!
X

Welcome to Overclockers.com

Create your username to jump into the discussion!

New members like you have made this the best community on the Internet since 1998!


(4 digit year)

Why Join Us?

  • Share experience
  • Max out your hardware
  • Best forum members anywhere
  • Customized forum experience

Already a member?