nForce 680i SLI mobo on-board LED code question: what does the -- code mean?

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peppergomez
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2010/08/04 16:59:31 (permalink)
My computer won't boot even to BIOS, and I have see a flashing "--" in the on-board LED code. Because this code isn't listed in the instruction manual Appendix A- List of On-board LED codes, I would like to know what this means.

Also, from left to right, there is a flashing yellow light and green light in the top right corner of the mobo, in the CR12J2 and CR12J3 circuit LEDs.

For some reason, the back fan is also not working now when plugged into the mobo.

My ATI Sapphire card's "overtemp protection" redlight card begins blinking immediately upon booting up (presumably before it has time to actually overheat?)

All of these errors occurred after I did two things--

1. Replaced my PSU (w/ a Corsair TX750W PSU)

2. Cleaned off and reapplied the thermal paste as per this post:  http://forums.evga.comarchive/tm.asp?m=231180

I've done step 2 before, so I know how this procedure goes. I reattached the mobo (hopefully) plugged everything back in, and then rebooted, only to encounter the above errors.

Anyone got any helpful feedback to these questions?

Thanks.


#1

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    XrayMan
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 19:51:51 (permalink)
    1. reset your cmos by using the jumper, check your manual if you dont know how
    2. if that doesnt work, take your cmos battery out and leave it out for an hour or more with the cmos jumper in the reset position (i forget if its pins 1 and 2 or 2 and 3)
    3. if it still doesnt boot check all of your connections and make sure no wires are touching anything they shouldnt be touching (also check your cpu and heatsink as someone already mentioned.
    4. if it still doesnt work take everything apart and out of the case and assemble the system on a piece of cardboard.
    5. Check your Power Supply connections to the Motherboard.
    6. Make sure the voltage of the Ram is no higher than 2.2v. That Motherboard can't handle anything higher.

    *If none of that works, then you will need to RMA the Motherboard.

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    #2
    peppergomez
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 20:34:42 (permalink)
    Thanks a lot. Your first suggestion did work and accomplished this--

    mobo  LED code is now 1D: Early PM Early PM initialization. I notice the back fan still isn't running though, when plugged into the mobo.

    The red light no longer appears on my ATI card.

    Edit- after plugging in more cables and such, the mobo LED code is C1- Memory Presence (Base memory detect)
    What is the significance of this?
    post edited by peppergomez - 2010/08/04 20:49:00
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    XrayMan
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 20:49:12 (permalink)
    Ok, that is most likely a Ram error. Try 1 stick at a time in the first slot to rule out a bad Ram stick. If none of them work, and you still get the 1D error, I want you to put 1 stick of Ram in the slot farthest away from the CPU and tell me if that worked. Also, make sure your Ram settings are correct. Use their default settings. After your done, post back, and tell me the results.

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    #4
    peppergomez
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 21:38:08 (permalink)
    I took out 1 stick of RAM (I have 4), the one I took out and put back in earlier when reattaching various cables. After booting without this stick, mobo beeped and LED reads 7F- POST error check (check POST error and display them and ask for user intervention)


    I have no video as I do this, because I removed my ATI card because the red light was on the card again.  Tried seating the card in the other PCI slot and the same thing happened (red light, no picture).

    Edit- Removed other 2 sticks of RAM so now I just have one seated. Same LED code- 7F.
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    XrayMan
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 21:44:21 (permalink)
    I'm sorry, but troubleshooting is a hassle. You now need to try a different Video Card to see if you still get the red light. This is to rule out a bad Video Card. Make sure, if the Video Card has a plug on it, for the Power Supply, that it's in there securely. If another card gives you the same problem, then you need to RMA the Motherboard.

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    peppergomez
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 22:12:32 (permalink)
    OK, it seems at this point to be the RAM- how though can I tell if it's the stick or, worse, the RAM slot in my mobo? 

    Putting the 3rd and 4th stick of RAM results in the errors I posted in my first post, while having RAM in the 1st and 3rd slots enables me to boot to Windows without any problems. 

    How to determine if the problem lies with my my RAM or my mobo?
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    XrayMan
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 22:17:14 (permalink)
    peppergomez

    OK, it seems at this point to be the RAM- how though can I tell if it's the stick or, worse, the RAM slot in my mobo? 

    Putting the 3rd and 4th stick of RAM results in the errors I posted in my first post, while having RAM in the 1st and 3rd slots enables me to boot to Windows without any problems. 

    How to determine if the problem lies with my my RAM or my mobo?


    Can you reword that? Ok, you have 4 sticks of Ram. Do two of them work and the other two don't, or does only two of the Motherboard slots work? Please be more specific. Thanks!

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    peppergomez
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 22:30:56 (permalink)
    Hmmm...I have 2 sticks of Kingston and 2 sticks of Corsair. I swithced the order (Corsair in slots 1 and 3 and Kingston in slots 2 and 4) and now they seem to be working. Booted to desktop w/ no errors. Fingers crossed...

    Thanks by the way for your prompt and really helpful replies.

    At this point, there are 2 spots on the mobo where the 3-pin fan power connectors don't work. I have gotten all fans working (using a free 3-pin power connector on the mobo and one via an adaptor from my PSU), but I am worried that my mobo might have shorted out in spots, making continued use of it unwise and/or risky to my other hardware.

    What do you suggest?
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    XrayMan
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 22:46:49 (permalink)
    First of all, your not supposed to mix different brands of Ram. That is a no no! Also, to make all your 3 pin fan headers work on the Motherboard, there is settings in the Bios for that. I don't recall what it's called in the Bios. I think it might be in "Dynamic Fan Control", but I'm not positive. (Also, don't plug a 3 pin molex connector from your Power Supply to your Motherboards 3 pin fan control. You will or already have messed up the board. I hope you didn't do that. (Sorry if it feels like I'm scolding you, but I need to stop you from ruining the Motherbooard any further) I suggest you take your computer to a computer repair place to take a look at everything, and make sure everythings is connected properly, and can tell you what you did wrong.

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    peppergomez
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 22:57:30 (permalink)
    Thanks for the advice. I'll check the BIOS for the fan header settings. What's the reason for not using the PSU- too much power?

    I did do that... but not for long

    What is the 9 pin yellow serial connector (part 15 on page 11 of the 680i user manual) for?  I don't have anything plugged into it now.
    post edited by peppergomez - 2010/08/04 23:06:36
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    XrayMan
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 23:01:43 (permalink)
    peppergomez

    Thanks for the advice. I'll check the BIOS for the fan header settings. What's the reason for not using the PSU- too much power?

    I did do that...

    What is the 9 pin yellow serial connector (part 15 on page 11 of the 680i user manual) for?  I don't have anything plugged into it now.


    I'm sorry, is this plug in the pic the one you mean't your using? If so, that's ok.
     

    Let me check into that 9 pin plug for you. I will respond back in a moment.
     

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    peppergomez
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 23:09:26 (permalink)
    y\Yes- that was the plug, a converter from the psu,. which doesn't have a 3-pin female socket on it.

    Anyway, plugged my fan back into my mobo and it now working.  things SEEM to be running okay now. 

    I think following your first suggestion re: the CMOS jumper reset is what got me back on the path to repair.  Fingers crossed from hereon out. I hope my system temps stay at a more reasonable level now such that my system doesn't keep shutting down (the entire reason I undertook switching out my PSU and reapplying the thermal goo)

    thanks!
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    peppergomez
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 23:12:53 (permalink)
    Core temps at idle are much better now- about 12-15 degrees lower than before, at 53 Celsius.


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    XrayMan
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 23:14:19 (permalink)
    peppergomez


    What is the 9 pin yellow serial connector (part 15 on page 11 of the 680i user manual) for?  I don't have anything plugged into it now.
     

    It's a serial port that is a general-purpose interface that can be used for almost any type of device, including modems, mice, and printers (although most printers are connected to a parallel port, or USB port).  I personally don't know anyone who ever uses that port.

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    XrayMan
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/04 23:36:32 (permalink)
    peppergomez

    y\Yes- that was the plug, a converter from the psu,. which doesn't have a 3-pin female socket on it.

    Anyway, plugged my fan back into my mobo and it now working.  things SEEM to be running okay now. 

    I think following your first suggestion re: the CMOS jumper reset is what got me back on the path to repair.  Fingers crossed from hereon out. I hope my system temps stay at a more reasonable level now such that my system doesn't keep shutting down (the entire reason I undertook switching out my PSU and reapplying the thermal goo)

    thanks!


    I'm glad I was able to help you out, and get things going right again with your Motherboard. I knew I would help someone out tonight, even before I saw your post. It took over 3 hours, but at least the end result was a good one. Have a good night, and if you have any more problems, then just post back again. I should be back on tomorrow night again for a few hours, looking for other people to help. Take care!

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    peppergomez
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/05 08:26:16 (permalink)
    Thanks.  After putting the case together and plugging everything in on the mobo, the idle CPU temps are around 60 celsius, and around 67 celsius when running a game, and idle GPU is around 57.  This is about 5-10 degrees cooler than it was running before I started to have problems.

    One thing I notice is that the SATA slot add on for the back (4 SATA slots, 2 on each wire, that connect to the 9- I think- pin connector on the mobo) isn't working.  Usually I can only get half of it (2 slots, 1 wire) to work by plugging it into the SATA pin connector on the lower left of the mobo. I have it plugged in there but there's no signal.  Is this something I can check on/activate in the BIOS? 

    So far, knock on wood, the mobo seems to be running okay.

    Do you have any idea what might have happened to create all these problems?  I suspect my temperature issues were caused by that missing/broken pin on one side of the southbridge, which resulted in it not properly sealing. 

    A friend thinks the problem was my PSU.  I ran an application called SpeedFan, which read my +12V as being at 9.82V.  I replaced the PSU with a Corsair PSU and, like I mentioned reapplied the thermal paste and also used a nylon screw to properly reseat that side of the southbridge that wasn't properly set before.

    Fast forward to now, with everything (well, almost everything, barring that SATA panel not working) is running ok. Ran SpeedFan again, and notice it reports roughly the same reading for my +12V on the Corsair PSU: 9.82V to 9.77V. Makes me think that SpeedFan is not the way to evaluate PSU effectiveness.



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    XrayMan
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/05 19:07:34 (permalink)
    No, don't use Speed Fan for that. Also, your asking what may have been the problem. Well it's hard to tell. You did many things to try and fix it, so you definately did something to fix the problem. Anyways glad I was able to help. This took a long time to fix, and lets just see how it goes now.

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    #18
    Diff_1
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    Re:nForce 680i SLI mobo on-board LED code question: what does the -- code mean? 2010/08/09 15:31:20 (permalink)
    AS far as your external SATA not working any more, there is settings in the BIOS to enable an disable those. It set them back to disabled which is the default when you cleared your CMOS.

    To reenable them log into the BIOS, then Intergrated Peripherals, then eSATA config and renable them all if you need them.

    EVGA x58 E758 BIOS 77, i7 920 C0 @ 3.3GHZ, Corsair 750TX, EVGA GTX 480 HC FTW 11th anniversary prize THX EVGA, OCZ3P1600LV6GK, OCZ Vertex 2 SSD 120GB, Logitech X-540 5.1, LG W2453V, Swiftech H20-220-Ultra-GT WC kit with XSPC rx360, Windows 7 pro 64 bit OEM
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