dfi nf4 cold boot issues?

[PHILIP1193]

any 1 else had a cold boot issue on their dfi boards?

i think i may have it, it happens when u run high voltage through ram?

Phil

 

[maverik-sg1]

I have had 4 of these boards in total, not one cold boot issue with any of them.

Make sure you are running BIOS 310 or higher to ensure maximum compatability.

Some people with PSU problems have suffered the same problem you are experiencing - check that ain't the problem.

Always goo to post your full specs so that expereinced users may be able to identify other potential problem areas.

Cheers

Mav

 

[nick25]

Are you running the 4V jumper?

 

[scorchio]

As mav said i'm on my 2nd board never had a cold boot issue.Sounds more like a power supply problem.A little more info would help,ie what system spec you are runing,does the system boot when not on the 4v jumper bios used.What actually happens.The more info the better!

Are you running the 4V jumper?

 

[PHILIP1193]

this is the problem i have...........

It's DFIs bad hardware design. Specifically Vdimm, which in my opinion is not performed in an optimal way in the terms of how this voltage is maintained when the power is removed from the mainboard. As a note: there are variable resistors that can be controlled electronically and that do maintain their resistance even after power has been removed from them - this is definately not what DFI is using.

My CMOS setup for Vdimm is 3.5V

(1) With my PC on: 3.6V

(2) Shutdown my PC: 0.0V

(3) Measurement at power on: Does not overshoot 3.6V

Everything is fine and dandy - exactly as it should operate.

Next up - the problems begin

Shutdown the PC and remove the power plug

(4) Reinsert the power plug, the PC is OFF: 2.7V

--- This in itself is strange - Why is there voltage to the RAM? - the machine is off!

--- See (2) above, there the measurement was zero as expected, this 2.7V should not be there.

(5) Turn on the PC. Vdimm = 2.7V and I get the beepity beep!

The voltage remains at 2.7V, and the PC cannot boot!

^^^^ the exact problem taken from the ocz forums support froums on bleeding edge!!

you are lucky not to have had it but as you can read the ocz vx stuff and teh dfi board dont mix well, my ram was at 3.5v (so yes using 4v jumper) @ 2-2-2-5 @ 238fsb but then i got cold boot problem so i now run 3v with ram at 227 @ 2-3-2-6 which aint too bad i guess for 3v

If some of you are not aware, the DFI Nforce 4 Ultra/D/DR SLI models has a jumper setting onboard that allows you to increase the voltage supplied on the Vdimm feed from 3.3 volts to 5 volts. This will give users the option to supply more than 3.2 volts to the ram on their DFI motherboards.

As an example, OCZ VX, Mushkin Redline and other UTT based ram products use this extra voltage to obtain tighter timings with overclocked settings.

I had been having major issues with this board and the 5 volt Vdimm setting, to the point where 1 of my boards has died and is now back with DFI for RMA.

This prompted me to contact DFI technical support in the USA.

I just spoke to Frank Wong at DFI USA about the major problems people are getting with the 5Volt Vdimm jumper setting on these motherboards.

His response was very disturbing.

Mr Wong basically informed me that DFI R&D in Taiwan know about this issue and have been testing this jumper setting with many different major ram modules. He told me that the 5 volt setting is causing and i quote "Major Issues".

Mr Wong went on to say that DFI's R&D in Taiwan recommended to him that the 5 volt jumper be set to the default 3.3 volt setting on the board while the problem exsists.

Mr Wong also said "At this time they do not have a fix for this problem. Our R&D has also found that the Vdimm jumper when set to 5 volts can cause some of the motherboard chipsets to blow"

So there we have it straight from the horses mouth.

If you own 1 of these boards and have the jumper set to 5 volts, DFI Tech support in the USA recommend changing it back to the 3.3 volt setting until DFI R&D in Taiwan can fix the problem.

I would like to thank Mr Frank Wong from DFI USA Technical support for sharing this information with me. This is how a good company should operate "Communication with its users".

So once again thank you Frank, keep up the great work and lets hope DFI come up with a fix soon.

^^^ more info for ya!!! even dfi admits to problem on board

over and out

Phil

 

[Wingz]

there is a new bios (618) which is suppose to fix the problem..

http://www.xtremesystems.org/forums/showthread.php?t=66188

 

[maverik-sg1]

Of course some of these issues can be PSU related which is why we always request the full specification of your rig before commenting.

On the flip side - the fact that there is a BIOS fix means that simlar problems that are DIMM voltage do exist - I will be upgrading to this the very near future as a precaution.

@ phil 1193 post your system specs here and lets see if we can help you - of course I recemmend you look at the thread you provided and see if it is appropriate for you to upgrade as well.

Cheers

Mav

 

[Bradmax57]

Well recently ive been having a few problems with my Razor Diamondback USB mouse constantly having to unplug and replug and also yesterday since install the usb control unit on my Vapochill XE II, maybe this bios will solve the issues?

 

[PHILIP1193]

there is a new bios (618) which is suppose to fix the problem..

http://www.xtremesystems.org/forums/showthread.php?t=66188

cheers for link buddy but i aint flashing yet, some peeps ahve reported teh cold boot issue has gone others not, ill wait for a while im on hellfires 510-2 for now and am at 2-3-2-6 @ 3v and 2.575ghz @ 1.55v stable as fcuk lol, so far so good but til i know the cold boot is gone i canner be assed to fiddle especially wid a lan comin up this week end i dont want my comp broke for then

Phil

 

[maverik-sg1]

Reference the boot issues - I find if I have to reset CMOS for any reason - my rig wont boot unitl I remove teh stick of ram that is closest to the CPU (orange slot) - Then I can post, get inot BIOS and set-up all my settings again (or CMOS RELOADED) restart and pop the RAM back in and we're up and away again.

Sounds tedious, it is a little, but I am used to it now and it's part of the 'fun'