SOLVED GA-890FXA-UD5 Reboot Issue

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Apht3rThawt said:

BTW the Ripjaws X series is made for intel P67 afaik.

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Yeah, I did notice that. Setting that aside, I'm still wondering why the POST either refuses to complete or takes more than 5 minutes when using the Mushkin PC10666 1333mhz memory with default timings though...

Again, both types of memory seem to POST and run reliably for days if you start from a cold PSU, but as soon as you reboot or soft-shutdown/restart, you're out of luck... I've honestly never seen an issue quite like this.

Wow I hadn't noticed the additional posts on this thread. I stopped getting reply e-mails. I just happened to check on the thread.

I had noticed the vdroop in my board, but there's no setting in the BIOS to set to help alleviate the problem. I'll try the higher vcore, but I did already try increasing it. I think its currently set to 1.4 v. Not sure, I'm not next to my system atm.

I also noticed the command rate being 1T and thought it was odd. Nevertheless, I did actually try 2T at one point and noticed it did not help.

Unfortunately, I did NOT try BOTH VCore 1.4V and 2T command rate at the same time. I'll give that a shot and see what happens.

I am getting Gigabyte's advise on this issue. I have also included a URL to this thread. Hopefully some good can come of this issue. Evidently I'm not the only one. As crazy as this sounds, it does make me feel better.

cgfresno said:

I had noticed the vdroop in my board, but there's no setting in the BIOS to set to help alleviate the problem. I'll try the higher vcore, but I did already try increasing it. I think its currently set to 1.4 v. Not sure, I'm not next to my system atm.

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Do you have a bios setting called Load Line Calibration (LLC)?

cgfresno said:

I had noticed the vdroop in my board, but there's no setting in the BIOS to set to help alleviate the problem. I'll try the higher vcore, but I did already try increasing it. I think its currently set to 1.4 v. Not sure, I'm not next to my system atm.

I also noticed the command rate being 1T and thought it was odd. Nevertheless, I did actually try 2T at one point and noticed it did not help.

Unfortunately, I did NOT try BOTH VCore 1.4V and 2T command rate at the same time. I'll give that a shot and see what happens.

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For the Record I did try this. Same result.

trents said:

Do you have a bios setting called Load Line Calibration (LLC)?

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I have not specifically spotted it, no. In fact, any voltage controls are listed in the previous screenshot (camera picture of BIOS), which shows ALL available voltage controls.

I have seen on some BIOSes that you need to press a key combination to access further items in the BIOS. Could this be the case here?

cgfresno said:

I am getting Gigabyte's advise on this issue. I have also included a URL to this thread. Hopefully some good can come of this issue. Evidently I'm not the only one. As crazy as this sounds, it does make me feel better.

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Still no contact from Gigabyte. Superior support services at its best...

QuietIce said:

to OCF!
AMD's published specs on your CPU show a vCore range of 1.25-1.475, which is why 1.375 (average + 0.0125v) was chosen for "normal". Since you've got such a bad vDrop why not try increasing the vCore to 1.40, or maybe even 1.45v, to see if that will clear up the problem?

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I tried setting it to 1.45 V just to see. Again the same problem occurred.

cgfresno said:

For the Record I did try this. Same result.
I have not specifically spotted it, no. In fact, any voltage controls are listed in the previous screenshot (camera picture of BIOS), which shows ALL available voltage controls.

I have seen on some BIOSes that you need to press a key combination to access further items in the BIOS. Could this be the case here?

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I ran through the motherboard manual really quick. No mention of LLC or Vdroop controls, and no mention of a secondary BIOS menu enabled by key press.

cgfresno said:

I have seen on some BIOSes that you need to press a key combination to access further items in the BIOS. Could this be the case here?

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Maybe. Ctrl + F1

With a high end board like that I would thing there would be some kind of manual adjustment for vdrop/vdroop offset.

trents said:

Maybe. Ctrl + F1

With a high end board like that I would thing there would be some kind of manual adjustment for vdrop/vdroop offset.

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That's what I would've thought as well. Again, no mention of anything regarding this in the manual.

I'll try the key combination when I get home this evening.

I just did a lookup at Gigabyte's website as to what Motherboard is compatible with the 1075T here:

http://gigabyte.com/support-downloads/cpu-support.aspx

It Says that the motherboard is compatible but with version 3.1 PCB. I have version 2.1. Can anyone shed light on what the differences are on the PCB version?

EDIT: Nevermind, I hadn't spotted that version 2.0 is also compatible with BIOS F5 further up the page. Disregard this post.

cgfresno said:

Still no contact from Gigabyte. Superior support services at its best...

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Same here... It's been a week now with no reply. I couldn't wait any longer, so I sent the board back. Still curious to see how this turns out though.

otj said:

Same here... It's been a week now with no reply. I couldn't wait any longer, so I sent the board back. Still curious to see how this turns out though.

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Well, I finally got a hold of Gigabyte:

Dear customer,

We don't have this kind known issue on our side, you may need to test with single stick memory a time on slot close to cpu, test with graphic card or power supply. If issue still persists, please refer to our warranty, whether replace mother board from the vendor or submit RMA request, let our mother board specialist check and test the complete board for you:
All motherboards carries a 3 years warranty from the date it was manufacture (according to serial number), products which was purchased within 30 days will be handled directly from your vendor/dealer, they will replace mother board. Over 30 days please log on our online RMA service http://rma.gigabyte-usa.com go to end-user click on add new request fill out the RMA request form click on submit, our RMA dept will assign RMA# and shipping instruction by email.

Best regards,

Gigabyte technical support team

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They admit that they have no idea what the problem is. So I'll try a different power supply and see if I get better results. For the record, I have tested my power supply with a power supply tester, and I am receiving proper voltages across the board. Perhaps a matter of insufficient amps on the circuit. I haven't check the amps on the power supply lines just yet.

On a side note: I had AMD OverDrive running yesterday and noticed that my vcore fluctuates while the system is running AND its not consistent between the CPU cores. Some cores report Vcore is 1.25 while other cores report 1.375 and what was the same two cores that kept fluctuating like that. Thats a pretty extreme drop in voltage.

So at least have some ideas where to head next with this issue:
- Try another power supply
- Try disabling the two cores that vcore was fluctuating to see if it resolves the issue.

The second bullet point my be a result of the system underclocking itself due to no load on the CPU, but usually it downclocks CPU Frequency and not voltage, right? So this may or may not resolve anything... but its worth a shot I'd say.

I'll keep everyone updated.

This is the power supply that I have:

http://www.newegg.com/Product/Produ...c_TruePower_New_TP-750-_-17-371-025-_-Product

What is everyone's thoughts on it? It says on the label (from newegg's site anyways) that there is 25 A circuits on the PSU. That should be plenty for the few devices I have in my system. There really isn't all that much so it should fine.

Calculating my power supply wattage on Extreme Power Supply Calculator shows a recommended wattage if 560 W (IF I WERE TO OVERCLOCK) so the PSU SHOULD be fine.

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QuietIce said:

CoolNQuiet shouldn't have any effect on this issue but it would be worthwhile to disable CnQ as well as C1E and any Windows power saving features like sleep and Power Saving Mode. I know there have been issues with sleep mode on some boards. I'd also disable any Turbo feature in BIOS.

That PSU is made by SeaSonic so, assuming there are no defects, it should work well for your system. However, even the best manufacturers have bad units now and then.

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I disabled sleep mode in Windows. I almost always do on my computers because if I don't need them on I turn them off completely. Sure faster startups through sleep mode, but if you add up the power usage of sleep mode, then far better off just to turn them off. Power Bills get especially outrageous here in California.... Never mind during the summer... I know it doesn't use much better... but the more money I can put in my pocket... the better... also more money to upgrade the system with later on.

I also disabled C1E and CnQ right off the bat when I started having issues. I used to have a E6600 OC'd to 3.6 GHz on an ASUS P5Q Pro Turbo and just got into the habit of having that stuff turned off, so thats definitely not the problem.

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QuietIce said:

How about Turbo mode? It's possible your BIOS doesn't have that option but it's worth a quick check.

Also, make sure Windows is set for Performance. Don't ask me how but some people have reported downclocking even with CnQ and C1E turned off and setting Windows to Performance solved the problem both times it's happened ...

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I'm using Windows XP at the moment. I don't believe it has the ability to specify performance or power saving etc.

I haven't specifically noticed a "TURBO" mode in the BIOS. But I went through all the BIOS prompts and turned anything off (or disabled) anything that had any indication that it would under(over)clock the hardware.

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QuietIce said:

You're right - XP doesn't have it, at least not the way I'm talking about.

I just looked through your manual and I didn't see it either. Some boards have a different name for it so I thought I'd check but nope. Don't know why there would be voltage fluctuations in different cores like that ...

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Yeah. The more and more digging that I do, seems to be coming 'round to the motherboard time and again.

I'll try a different PSU just to be safe before spending money RMAing the system board but if problems persist, its getting RMA'd.

I guess we'll see...

This may sound stupid, but did you try resetting the CMOS? My brand new board (the one in my sig) wouldn't read the RAM speed correctly until I reset the CMOS. Also I found out I had a failing hard drive which was causing issues similar to what you are having. New hard drive fixed it.