Something failed not sure what. More info inside.

Jul 16, 2011
26
1
0
My setup is:
Asus p8p67 pro rev 3.1
I7 2600k
2x4gb corsair vengeance 1600
No optical drive
4x case fans
2x hd6850
Hyper212+ 1 fan
Corsair CX600 watt psu

I have been running this at 4.8ghz 1.39vcore for 15 days
12 hours of prime95 hit 68c on hottest core

Opened assassins creed revelations with crossfire disabled loaded a map and it shutoff.
I rebooted and reset bios to default and started up ACR again, loaded my save and it turned off again and won't turn back on.

The boards green standby light stays on but it won't turn on, I tried to remove CMOS battery no luck. I tried diff psu no luck. Nothing starts at all.

I got replacement mobo CPU and psu conning Saturday but I don't know why it failed, should I get a diff psu? Was it just a faulty mobo? Which part fAiled?

Sorry for spelling or grammar mistakes I'm typing this on my phone due to this problem . =/
 

Zap

Elite Member
Oct 13, 1999
22,377
2
81
You'll know which part failed once you swap it out and it turns back on. Just asking "it won't turn on, which part failed?" doesn't give any clues. If by "it won't turn on" you are saying that the fans don't even spin up, then I do think you're on the right track as it would usually be the motherboard or PSU. If it does power up, but does not give a picture, then it could also be RAM, CPU or GPU.
 

Schmide

Diamond Member
Mar 7, 2002
5,590
724
126
Even if it's not the problem, I'd say you're way over power budget especially with that overclock.

At that voltage and clock your CPU is prob pulling 140-175w load.

Then you get to the 2 hd6850s that can pull 125-175w each.

Add in the other misc wattage say 40w.

and you've blown your 480w budged on that psu by like 20w.
 

AtaliaA1

Junior Member
Mar 1, 2010
12
0
0
There are to many possibilities to answer that with any accuracy. a MB capacitor or the connection between two communication Avenues could have burned out. (Small part of MB that looks like a philamint in a lightbulb). The only way to test this in a home setting is the unfortunate "Process of Illimination" costly but without the right tools you just can't tell.

Crossfiring those cards does require a bump up in the Power supply catagory of your system get an 850w at least.
 
Last edited:
Jul 16, 2011
26
1
0
Okay well let me ask a new question, can a underpowered psu cause hardware failure?
The psu is not broken as far as I can tell. Like I said nothing turns on at all, I don't know how to make that any more clear to the first responder.
 
Jul 16, 2011
26
1
0
I did list all steps I took and the results .. Nothing turns on at all with multiple psu. Green standby light is on mobo but nothing else. Psu does work still so that did not fail. It was CPU or mobo failure. I'm trying to figure out why so it doesn't happen again.

Can underpowered psu cause failure?
 
Jul 16, 2011
26
1
0
Also I would like to add 6850s have low power consumption only uses 1 6pin power cord each.
It ran okay for 15 days, if it was low power, why fail now?

Also I am running 1 caviar green 5400rpm hd I forgot to put in op
Psu comes with 2 pci-e 8pins?? Doesn't make sense
 
Jul 16, 2011
26
1
0
Okay I've also tried each card separate and no card.
No fans spin up no beeps nothing only green light on mobo with multiple psu
Tried each rAm stick in every combination same thing just no power at all except this damn green light
That is the problem no starting at all like its just dead no fans even not even on psu
 
Jul 16, 2011
26
1
0
No indications of life whatsoever except this solid green light on mobo near the front panel jumpers. According to manual it is standby mode/soft power-off light
 
Nov 26, 2005
15,110
316
126
Blame it on ATI CCC drivers...

I hate to say it but i also am beginning to suspect GPU drivers more and more.

I only run UT3 on rig 2 (NV) and decided to update from the 280.26 drivers in recent weeks: been on 280 since they came out. I updated to the latest NV drivers and the system crashed twice in a matter of 2-3 days. Since then I completely uninstalled and deleted all old files and re-installed the 280 drivers and haven't crashed since.

On rig 1, I run a 5770. I can't remember which drivers I've been on. Maybe the 10.2. It's been almost a year since i've upgraded them. Recently I thought I needed to update my drivers to use the GPU encoding conversion app. I updated to the latest drivers last week and since then I've crashed (BSOD) 3-4 times.
 

Puppies04

Diamond Member
Apr 25, 2011
5,909
17
76
At that voltage and clock your CPU is prob pulling 140-175w load.

Where are you getting that number from i've seen reports of OC'd (4.6-4.8) 2600k's drawing close to 250 watt, am i missing something?
 

Markbnj

Elite Member <br>Moderator Emeritus
Moderator
Sep 16, 2005
15,682
13
81
www.markbetz.net
My instinct from your initial report is to look at RAM, since it failed when you tried to load a map. You didn't play any other games during that initial test period? Does the XMP-1600 profile for your sticks call for 1.5v or 1.65v?

But anyway, that wouldn't explain why it won't start now. Since nothing at all is spinning up it's not the CPU (because the fan's would be running at least... and confirm that please... no fans at all? not even the ones on the graphics card?). If no fans are running I'd replace the PSU, and then the motherboard.
 

Schmide

Diamond Member
Mar 7, 2002
5,590
724
126
Where are you getting that number from i've seen reports of OC'd (4.6-4.8) 2600k's drawing close to 250 watt, am i missing something?

That's a system at the wall, I was doing a component by component rundown.

Take the 140-175w - add the cost of the chipset (25w) and basic graphics (25w) + (misc 20-30w HD, fan, etc) and you get a 250w number. Give or take 15-25&#37; PSU efficiency.

Edit: In reality it's probably lower than the original figure I put out, but its best to fudge 20% higher than 20% lower as you'd like to run at 80% of the PSUs top wattage.
 
Last edited:

thilanliyan

Lifer
Jun 21, 2005
11,912
2,130
126
I had similar symptoms recently and it turned out to be my Asus M5A motherboard.

Do any fans spin up IF YOU REMOVE THE CMOS BATTERY ENTIRELY AND START WITHOUT THE BATTERY IN PLACE? For me it would start without the battery but as soon as I put it in it would not boot. Turned out to be a bad motherboard.

If you can, connect one of the mini speakers to the motherboard to see what beep codes you get.

The Asus m/b itself should have LEDs on the board which indicate a failure right? If none of those come on then it is probably the board, if you've ruled out your PSU already.
 

birthdaymonkey

Golden Member
Oct 4, 2010
1,176
3
81
My computer wouldn't turn on recently. It turned out it was a displayport cable. I'd replaced a DVI cable running to one of my monitors with a Startech Mini-DP to DP cable. It worked fine when I plugged it in with the system running, but the machine refused to cold boot with the DP cable connected... remove it and it would start right up. I've since gone back to DVI and have no issues.

My point: it could be something very unusual. OP, do you have any DP cables connected?
 

aigomorla

CPU, Cases&Cooling Mod PC Gaming Mod Elite Member
Super Moderator
Sep 28, 2005
20,882
3,230
126
video card + ram = Beeps on motherboard speaker.

Cpu = Failed no post

Motherboard = Failed no post

PSU = no bootup.

Do you hear any beeps as you turn on the machine?

Do you have a LED screen on the board which diags bootup?
If so, that can also tell you what failed.
 

tweakboy

Diamond Member
Jan 3, 2010
9,517
2
81
www.hammiestudios.com
I don't know how you get 4.8Ghz on only 1.39v ..... But your system was stable before this driver issue jacked things up ? If so lets rule out the CPU OC ,

better yet go to BIOS and set everything on stock , then boot into safe mode and remove the ATI HELL drivers and reboot. Try running 1 card.... boot into windows and install the great ATI latest WHQL from their site and let us know... gl
 
Nov 26, 2005
15,110
316
126
well, my rig crashed 4 times today,,, (rig1) i uninstalled the latest AMD drivers and am back to 10.12

EDIT: this is with knowing my rig passed over 200&#37; with Memtest HCI @ 5+gb worth of Ram tested
 

Magic Carpet

Diamond Member
Oct 2, 2011
3,477
232
106
My setup is:
Asus p8p67 pro rev 3.1
I7 2600k
2x4gb corsair vengeance 1600
No optical drive
4x case fans
2x hd6850
Hyper212+ 1 fan
Corsair CX600 watt psu

I have been running this at 4.8ghz 1.39vcore for 15 days
12 hours of prime95 hit 68c on hottest core

Opened assassins creed revelations with crossfire disabled loaded a map and it shutoff.
I rebooted and reset bios to default and started up ACR again, loaded my save and it turned off again and won't turn back on.

The boards green standby light stays on but it won't turn on, I tried to remove CMOS battery no luck. I tried diff psu no luck. Nothing starts at all.

I got replacement mobo CPU and psu conning Saturday but I don't know why it failed, should I get a diff psu? Was it just a faulty mobo? Which part fAiled?

Sorry for spelling or grammar mistakes I'm typing this on my phone due to this problem . =/
Does it power on with the P4 (CPU) cable unplugged?
 
Last edited:

CuriousMike

Diamond Member
Feb 22, 2001
3,044
543
136
Okay I've also tried each card separate and no card.
No fans spin up no beeps nothing only green light on mobo with multiple psu
Tried each rAm stick in every combination same thing just no power at all except this damn green light
That is the problem no starting at all like its just dead no fans even not even on psu

Remove everything from the system except the CPU/HSF.
Even memory.

Does it behave the same? If it does, that still doesn't conclusively say mobo or CPU, but I'd certainly feel more likely that it is.

If the behaviour changes, then it starts to point to whatever you pulled (memory, video, harddisk, cdrom whatever.)
 

Rvenger

Elite Member <br> Super Moderator <br> Video Cards
Apr 6, 2004
6,283
5
81
I would take it down to bare minimums and try a different power supply.
 
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