[SOLVED] Unexpected rebooting: not the PSU, what else could it be?
This is a discussion on [SOLVED] Unexpected rebooting: not the PSU, what else could it be? within the Motherboards, Bios & CPU forums, part of the Tech Support Forum category. After "upgrading" my machine (I've replaced so much, it's hard to call it an "upgrade" any more), the computer will
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07-23-2014, 05:37 AM
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#1
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Registered Member
Join Date: Jul 2014
Posts: 6
OS: Ubuntu 14.04
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After "upgrading" my machine (I've replaced so much, it's hard to call it an "upgrade" any more), the computer will frequently reboot, almost always within a minute of loading the operating system. The reboots take the form of the computer completely and immediately powering off, followed by a few seconds' delay, before turning back on.
I should clafiry: if I boot it up, log into the OS, and then just let it sit, the computer stays on and doesn't power off. It's only after I start doing stuff (sometimes as little as surfing the web, sometimes as much as loading a virtual machine, running USB capture software, and recording using screen capture) that it powers off.
The CPU isn't overheating--temperature rarely exceeds 40C and has only once gone above 60C--and I just replaced the PSU to no avail. In my experience CPU and RAM issues lead to kernel panics, and OS issues lead to less abrupt (and more descriptive) shutdowns than this.
So that leaves... what? The motherboard? Is there anything else I'm overlooking?
Relevant Specs:
-Intel i7-4790k
-Gigabyte Z97X-UD5H motherboard
-Seasonic G-Series 650W PSU
-OS: Ubuntu 14.04
The only other thing I could possibly think is that 650W is not enough power, but that seems insane, so here's everything else being powered by the PSU
-Corsair H60 liquid cooler (thru mobo)
-nVidia GT 430 video card (using it for D3D, not currently powering any monitors) (thru mobo)
-DVD combo burner, 1 SSD, 3 SATA HDDs, 1 PCI TV Tuner, several USB 2.0 devices
-Cooler Master HAF 932 case (read: 4x case fans)
My next steps will be to flash the BIOS (I think I'm on F6 right now and there's an F8 version), then check for bulging capacitors on the mobo. So I guess I'm wondering what to check if/when that doesn't work.
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07-23-2014, 05:41 AM
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#2
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Team Manager - Hardware
Join Date: May 2009
Location: Illinois
Posts: 51,523
OS: XP Pro-7
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Bios rarely, if ever, need flashing. A failed or incomplete flash can render a Mobo useless.
650W is WAY more than sufficient for a GT430.
Disable Auto Restart and see if you get any error messages.
Click on Start and then on Control Panel.
In the Control Panel double click to open System.
In the left panel under ‘Tasks’ click on Advanced system settings.
In the section labeled ‘Startup and Recovery’, click on the Settings button.
In the section labeled ‘System failure, remove the checkmark from ‘Automatically restart’.
Click Ok, OK to exit.
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All PC's are not the same. Posting your PC specs will help us to assist you quicker and effectively.
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07-23-2014, 06:50 AM
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#3
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Moderator Hardware Team
Join Date: Apr 2007
Posts: 15,469
OS: Windows 7
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if your motherboard has a speaker i.e you hear a beep when you switch the system on and POST starts remove all of the RAM. If you do not hear a series of beeps to say there is no RAM then the mobo is toast.
Also download memtest86 burn to disc and test each stick of RAM individually for atleast 6 passes (can take several hours per stick).
Have you made sure the cpu power connector is fully inserted?
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07-23-2014, 07:21 AM
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#4
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Registered Member
Join Date: Jul 2014
Posts: 6
OS: Ubuntu 14.04
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Thanks for the quick replies!
Quote:
Originally Posted by Tyree
Bios rarely, if ever, need flashing. A failed or incomplete flash can render a Mobo useless.
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Nice to know. I was thinking similarly, but I'm looking for anything here, and the F8 changelog says: "Improve Intel K-sku CPU performance"
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650W is WAY more than sufficient for a GT430.
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So I figured, but it's good to have confirmation that nothing else in the tower could be consuming near that level.
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Disable Auto Restart and see if you get any error messages.
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So this is a Linux box and it boots to GRUB rather than just starting Ubuntu automatically. I really don't think it's an Ubuntu issue, because every Ubuntu crash I've seen is far more "noisy" (involving freezes or the Linux-equivalent of BSoD).
Quote:
Originally Posted by greenbrucelee
Also download memtest86 burn to disc and test each stick of RAM individually for atleast 6 passes (can take several hours per stick).
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I've actually run memtest86 already (was using it to gauge CPU temps and to see if *it* would cause reboots--it doesn't), and it reports that the RAM is fine. I'll try taking out the RAM and listening for the beeping like you recommended.
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Have you made sure the cpu power connector is fully inserted?
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Was one of the first things I checked with the old PSU, but I don't think I've triple-checked with the new one.
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07-24-2014, 01:57 AM
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#5
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TSF Enthusiast
Join Date: Jul 2009
Location: Australia
Posts: 1,497
OS: W7 Home Premium 64 Bit
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It appears to be a fairly new Motherboard, is the operating system freshly installed on that board, or a remnant from an older system?
What setting is used in the BIOS for the SSD?
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07-24-2014, 05:31 AM
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#6
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Registered Member
Join Date: Jul 2014
Posts: 6
OS: Ubuntu 14.04
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Quote:
Originally Posted by Panther063
is the operating system freshly installed on that board, or a remnant from an older system?
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Thanks for the response. Fresh install.
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What setting is used in the BIOS for the SSD?
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Whatever the Gigabyte default. I'll check at some point.
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So last night I checked the mobo for bulging capacitors--nothing heinous--and then I flashed the BIOS from F6 to F8. I figured it was a long shot and knew it could potentially brick the board, but (1) I was looking at having to RMA the board anyway, (2) Gigabyte has "DualBIOS" *specifically* to ensure that it should be impossible to brick your mobo due to a failed BIOS, and (3) the changelog for version F8 *did say*: "Improve Intel K-sku CPU performance," and my chip is the 4790k.
So I start the flash procedure, get up to grab a glass of water, hear a beep when my back is turned and think to myself, "great--it rebooted in the middle of flashing the BIOS. THAT should be fun." And indeed--the computer boots to nothing but a black screen.
So I fill out the RMA request and decide to package up the mobo in the morning.
Morning comes, I decide to turn on the computer for kicks, I go and shower, and when I come back, I find the Ubuntu login screen.
"Huh," I think.
Turns out, the BIOS flashing worked just fine. The booting to a black screen was because the mobo's default setting is to display all the POST screens on the PCI graphics card. I didn't *have* anything plugged into the card (X11 configuration nightmares--the FX card is in there EXCLUSIVELY so that my Windows VM guest can use D3D). And then once I changed the settings and rebooted, the system behaved fine--no reboots in about 30 minutes of fairly heavy use.
More testing is of course needed to verify that this fixed the issue, but I am quite optimistic.
So, tl;dr-- flashing the BIOS from F6 to F8 seems to have resolved the issue.
Another possibility is that after flashing the BIOS, I "loaded optimized defaults" (something I'm pretty sure I did before, but it's possible the config didn't save). That could have done something to fix it. But if the issue is indeed fixed (won't declare victory for several more days), I'm crediting the new firmware.
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09-30-2014, 09:49 AM
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#7
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Registered Member
Join Date: Sep 2014
Posts: 4
OS: Win8.1
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Quote:
Originally Posted by antar05
Thanks for the response. Fresh install.
Whatever the Gigabyte default. I'll check at some point.
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So last night I checked the mobo for bulging capacitors--nothing heinous--and then I flashed the BIOS from F6 to F8. I figured it was a long shot and knew it could potentially brick the board, but (1) I was looking at having to RMA the board anyway, (2) Gigabyte has "DualBIOS" *specifically* to ensure that it should be impossible to brick your mobo due to a failed BIOS, and (3) the changelog for version F8 *did say*: "Improve Intel K-sku CPU performance," and my chip is the 4790k.
So I start the flash procedure, get up to grab a glass of water, hear a beep when my back is turned and think to myself, "great--it rebooted in the middle of flashing the BIOS. THAT should be fun." And indeed--the computer boots to nothing but a black screen.
So I fill out the RMA request and decide to package up the mobo in the morning.
Morning comes, I decide to turn on the computer for kicks, I go and shower, and when I come back, I find the Ubuntu login screen.
"Huh," I think.
Turns out, the BIOS flashing worked just fine. The booting to a black screen was because the mobo's default setting is to display all the POST screens on the PCI graphics card. I didn't *have* anything plugged into the card (X11 configuration nightmares--the FX card is in there EXCLUSIVELY so that my Windows VM guest can use D3D). And then once I changed the settings and rebooted, the system behaved fine--no reboots in about 30 minutes of fairly heavy use.
More testing is of course needed to verify that this fixed the issue, but I am quite optimistic.
So, tl;dr--flashing the BIOS from F6 to F8 seems to have resolved the issue.
Another possibility is that after flashing the BIOS, I "loaded optimized defaults" (something I'm pretty sure I did before, but it's possible the config didn't save). That could have done something to fix it. But if the issue is indeed fixed (won't declare victory for several more days), I'm crediting the new firmware.
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Hi,
You solved this problem? I had same problem!!! :( :(
http://www.techsupportforum.com/foru...w/banghead.gif
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09-30-2014, 09:51 AM
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#8
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Registered Member
Join Date: Jul 2014
Posts: 6
OS: Ubuntu 14.04
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Quote:
Originally Posted by n4mc0d
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Yep. Haven't had a single issue since. And I'm pretty sure all it took was flashing the BIOS from F6 to F8.
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09-30-2014, 09:59 AM
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#9
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Registered Member
Join Date: Sep 2014
Posts: 4
OS: Win8.1
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Quote:
Originally Posted by antar05
Yep. Haven't had a single issue since. And I'm pretty sure all it took was flashing the BIOS from F6 to F8.
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I have the Z97X-UD5H-BK. When I use prime95 or AIDA64 (FPU or cache checked) my system are rebooted. I dont know how update BIOS. If I mark "load optimized defaults", it a best solution for now?
This user says: "I had same problem but you don't notice till you check bios were the CPU is at stock voltage over 1.25+ and its on adaptive. To fix this set your voltage to 1.200 exactly if u want to run at 4.4 GHz including turbo. If u just want to run at 4.0 just set voltage to 1.000-1.100 and you will see a temp drop from 80-100C with hyper 212 evo to 65-73C = problem solved"
Link: i7 4790k Crashes with turbo boost at default settings - Intel i7 - CPUs
Could you help me, please?
ps. Sorry for my bad english.
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09-30-2014, 10:03 AM
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#10
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Registered Member
Join Date: Jul 2014
Posts: 6
OS: Ubuntu 14.04
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@n4mc0d, your motherboard instruction manual should include directions on how to update your BIOS.
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09-30-2014, 10:56 AM
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#11
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Registered Member
Join Date: Sep 2014
Posts: 4
OS: Win8.1
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Quote:
Originally Posted by antar05
@n4mc0d, your motherboard instruction manual should include directions on how to update your BIOS.
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Ok,
1 - You know how I turn off the "turbo boost" the cpu in the bios?
2 - You update the BIOS with Q-Flash or @BIOS?
Thank you!
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09-30-2014, 11:08 AM
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#12
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Registered Member
Join Date: Jul 2014
Posts: 6
OS: Ubuntu 14.04
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@n4mc0d, again, follow the instructions in your motherboard's user guide. It's up to you whether you use Q-Flash or the other thing.
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09-30-2014, 11:09 AM
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#13
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Registered Member
Join Date: Sep 2014
Posts: 4
OS: Win8.1
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Ok,
Thanks!
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