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Sometimes no POST - cannot ID the problem

Forum Motherboards & Memory : Motherboards Sometimes no POST - cannot ID the problem

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flashfir   05-07-2011 at 02:27:48 AM
- 0 +

I'm describing a problem that isn't crippling but seriously annoying. I'm thinking its the motherboard since I've run MEMTEST+86 overnight for 9 passes and my RAM showed up fine.

Sometimes my computer does not POST. Sometimes it does when I don't do anything. Sometimes it does after I use the hard-reset button. Sometimes it doesn't and I have to pull RAM in and out, permutations have been tried, sometimes resetting the CMOS eventually it boots up.

Once I'm in Windows, I'm golden. That's why I'm keeping my rig on for most 24/7 now since I don't want to take the chance of opening up the case and touching the RAM and turning it sideways, righting it side up turn on, off, sideways, repeat...

It's not the RAM slots because I have 4. It's failed to POST using my individual sticks in either BLUE or BLACK pair. It has also failed to post obviously with both of them in the BLUE or BLACK.

What should I do?
Thanks in advance. :D

---
RIG SPECS:

G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-4GBRL
http://www.newegg.com/Product/Prod [...] 6820231277

ASUS M4A77TD AM3 AMD 770 ATX AMD Motherboard
http://www.newegg.com/Product/Prod [...] 6813131603


AMD Phenom II X4 955 Black Edition Deneb 3.2GHz 4 x 512KB L2 Cache 6MB L3 Cache Socket AM3 125W Quad-Core Processor HDZ955FBGMBOX
http://www.newegg.com/Product/Prod [...] -_-Product

CoolerMaster Elite 430
http://www.newegg.com/Product/Prod [...] 6811119227

OCZ StealthXstream II OCZ600SXS2 600W ATX12V v2.2/ EPS12V 80 PLUS Certified Power Supply
http://www.newegg.com/Product/Prod [...] llFullInfo

SAMSUNG Spinpoint F4 HD322GJ/U 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
http://www.newegg.com/Product/Prod [...] llFullInfo



HIS H585FN1GD Radeon HD 5850 (Cypress Pro) 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card w/ Eyefinity
http://www.newegg.com/Product/Prod [...] llFullInfo

------------------------------ Fractal R3, 955/Hyper 212+, StealthxStream II 600w, HIS 5850, G.Skill 4gb, Vertex 30gb
 Reply to flashfir
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T_T   05-07-2011 at 03:29:04 AM
- 0 +

No POST as in everything appears/seems to be working, but no display? If that is indeed the issue, I would run some tests on your GPU and PSU, just to make sure.

GPU Tests:
1. Power on your system. Let it POST or attempt to. Succeed or fail, turn off the system. Do this 5 times. Jot down how many of the 5 times resulted in "No signal" on your monitor.
2. Swap out the GPU, then repeat step 1.

PSU test:
Use a digital multimeter to check the voltages on the P1 connector.

Red = +5V
Yellow = +12V
Blue = -12V
Orange = +3.3V
Brown = +3.3V
Green = +5V
Gray = should go from 0V to 5V when you turn on the power

Message quoted 1 times
Message edited by T_T on 05-07-2011 at 03:31:08 AM
------------------------------ http://valid.canardpc.com/cache/banner/1299728.png

PERFORM THESE STEPS before posting about boot problems
Reply to T_T
flashfir   05-07-2011 at 08:54:03 AM
- 0 +

T_T wrote :

No POST as in everything appears/seems to be working, but no display? If that is indeed the issue, I would run some tests on your GPU and PSU, just to make sure.

GPU Tests:
1. Power on your system. Let it POST or attempt to. Succeed or fail, turn off the system. Do this 5 times. Jot down how many of the 5 times resulted in "No signal" on your monitor.
2. Swap out the GPU, then repeat step 1.

PSU test:
Use a digital multimeter to check the voltages on the P1 connector.

Red = +5V
Yellow = +12V
Blue = -12V
Orange = +3.3V
Brown = +3.3V
Green = +5V
Gray = should go from 0V to 5V when you turn on the power



Just to clarify: When you say everything working it means all kinds of fans & HD spinning just no POST beep nor any output to monitor.

I don't have a digital multimeter :(
I'll do what you suggest for the GPU but I've kinda done that before since this episode has occurred so many times. And 90% of the time turning it on and off and on and off multiple times does not change anything.

------------------------------ Fractal R3, 955/Hyper 212+, StealthxStream II 600w, HIS 5850, G.Skill 4gb, Vertex 30gb
 Reply to flashfir
flashfir   05-07-2011 at 08:13:52 PM
- 0 +

Spent 30 minutes this morning, learned something new.

What is the likelyhood that 2/4 of your RAM slots on your MOBO are broken? One in each of the Dual Channel pairings... I'm running 4gb on single channel now. DUMB.

http://img39.imageshack.us/img39/2013/badb.png

Both are supposed to go in black or both in blue. Right now I have one in the 2nd and 4th because the highlighted 1st and 3rd ones I cannot get it to boot single stick (tried with both my 2gb modules individually) NOR with both in BLUE or BLACK.

------------------------------ Fractal R3, 955/Hyper 212+, StealthxStream II 600w, HIS 5850, G.Skill 4gb, Vertex 30gb
 Reply to flashfir
soundguruman   05-07-2011 at 10:49:05 PM
- 0 +

Install the memory in the two slots closest to the processor, if the problem still happens replace the motherboard.

------------------------------ My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives.

 

Reply to soundguruman

flashfir   05-08-2011 at 03:11:37 AM
- 0 +

I did in my testing. Can explain how that's different than the two further? I did and it took an extra 5 suspicious seconds to post beep, is there an explanation for that?

 

Just went into bios lowered my modest 3.6oc to 1.375vcore and now no post. Shoulda just kept the computer on! Rats


Message edited by flashfir on 05-08-2011 at 03:18:35 AM
------------------------------ Fractal R3, 955/Hyper 212+, StealthxStream II 600w, HIS 5850, G.Skill 4gb, Vertex 30gb
 Reply to flashfir
flashfir   05-17-2011 at 07:05:56 PM
- 0 +

Problem seems to have disappeared right now by putting my computer horizontal. *incredulous*

 

The POST beeps occurs quickly like NORMAL rather than like 5-10 seconds after I push the power button/reset.
I'm in the two slots closest to the processor.


Message edited by flashfir on 05-17-2011 at 07:06:21 PM
------------------------------ Fractal R3, 955/Hyper 212+, StealthxStream II 600w, HIS 5850, G.Skill 4gb, Vertex 30gb
 Reply to flashfir
flashfir   05-21-2011 at 10:08:32 PM
- 0 +

New update: I'm in the two black slots right now *see image above*

It always posts when I have the computer lying horizontal rather than vertical.
http://4.bp.blogspot.com/_xIJ_e-AeW24/TO-M-I2wkiI/AAAAAAAAAAw/1SGLjctm_gI/s1600/Elite+430+Black.jpg

Why would this change anything?

------------------------------ Fractal R3, 955/Hyper 212+, StealthxStream II 600w, HIS 5850, G.Skill 4gb, Vertex 30gb
 Reply to flashfir
T_T   05-24-2011 at 02:38:55 AM
- 0 +

Maybe it's something to do with the case. Have you tried bread boarding? If not, do so, but also turn the mobo vertical to see if the problem still happens with the mobo outside of the case.

------------------------------ http://valid.canardpc.com/cache/banner/1299728.png

PERFORM THESE STEPS before posting about boot problems
Reply to T_T
flashfir   05-24-2011 at 11:27:47 PM
- 0 +

Recently I got a memory manegement blue screen and I just ran memtest today and it failed multiple times most within the same test 3rd hour in today.

Is it possible that a mobo might cause good ram to fail memtest? If not then I know 100% my ram was slowly going bad and was the culprit these past few months!

------------------------------ Fractal R3, 955/Hyper 212+, StealthxStream II 600w, HIS 5850, G.Skill 4gb, Vertex 30gb
 Reply to flashfir
T_T   05-25-2011 at 07:55:20 PM
- 0 +

AFAIK, the only ways (which are a stretch) for the mobo to cause the RAM to fail would be:

1. Over volting too high; and
2. A virus designed to attack the BIOS

In all likelihood, the RAM was always the problem. If MT86+ shows errors, replace the RAM. If the problem persists after new RAM, RMA the mobo.

Message quoted 1 times
------------------------------ http://valid.canardpc.com/cache/banner/1299728.png

PERFORM THESE STEPS before posting about boot problems
Reply to T_T
flashfir   05-25-2011 at 08:00:16 PM
- 0 +

Thanks for the help!

------------------------------ Fractal R3, 955/Hyper 212+, StealthxStream II 600w, HIS 5850, G.Skill 4gb, Vertex 30gb
 Reply to flashfir
flashfir   05-27-2011 at 08:25:22 PM
- 0 +

T_T wrote :

AFAIK, the only ways (which are a stretch) for the mobo to cause the RAM to fail would be:

1. Over volting too high; and
2. A virus designed to attack the BIOS

In all likelihood, the RAM was always the problem. If MT86+ shows errors, replace the RAM. If the problem persists after new RAM, RMA the mobo.



Errr I was asking if it was possible for the ram slots on the mobo to be defective in such a way that the ram put into it wouldn't function 100% ok.

Thanks for your help but right now I dint see a best answer selection button >:/

Rma ram is going in a few days!

------------------------------ Fractal R3, 955/Hyper 212+, StealthxStream II 600w, HIS 5850, G.Skill 4gb, Vertex 30gb
 Reply to flashfir
flashfir   05-29-2011 at 07:56:09 AM
- 0 +

Passed memtest in two blueslots @ stock settings for 26 passes @ 27 hours.

Thinking its the mobo? Everything's stable atm.

------------------------------ Fractal R3, 955/Hyper 212+, StealthxStream II 600w, HIS 5850, G.Skill 4gb, Vertex 30gb
 Reply to flashfir
T_T   06-01-2011 at 01:41:23 AM
- 0 +

Just to clarify, are you using new RAM (as in just received after RMA)? and what, if any, are the results of the MT86+ in the black slots?

------------------------------ http://valid.canardpc.com/cache/banner/1299728.png

PERFORM THESE STEPS before posting about boot problems
Reply to T_T
flashfir   06-01-2011 at 01:50:26 AM
- 0 +

Nope old ones... Black ones they failed individually awhile ago. I'll test that again.


Message edited by flashfir on 06-01-2011 at 03:36:05 AM
------------------------------ Fractal R3, 955/Hyper 212+, StealthxStream II 600w, HIS 5850, G.Skill 4gb, Vertex 30gb
 Reply to flashfir
T_T   06-01-2011 at 03:04:15 AM
- 0 +

Either way, I concur with your thoughts. Bad mobo.

------------------------------ http://valid.canardpc.com/cache/banner/1299728.png

PERFORM THESE STEPS before posting about boot problems
Reply to T_T
soundguruman   06-29-2011 at 03:00:16 PM
- 0 +

Think Gigabyte.

------------------------------ My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives.

 

Reply to soundguruman

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