help Asus Sabertooth 990FX R2.0 and gskill 1600 mhz

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tom61

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Jul 23, 2013
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my pc hangs at halt at f1
it seems to reckonise the memory if I disable halt if error f1 it runs okay.
sent 2 boards back same thing.
vid card hd5750 but that seems ok.just want it to post properly any help please
 
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Tradesman1

Tradesman1

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Jun 5, 2013
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Think it may be a BIOS flaw, have seen same problem with Crosshair formula 990FX mobo, think it's something with the CPU FAN reading, popular 'fix' seems to be turn off the Halt on F1, wondering if BIOS doesn't feed juice fast enough to the fan header or a flaw in the design...might check for a BIOS update to see if it may be addressed there
 
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tom61

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Jul 23, 2013
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10,510


 
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tom61

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Jul 23, 2013
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I have not tried to over clock never over clocked yet but just want it to post properly from first build
boot led stays on with nothing on the screen' just sent crosshair formula z back and that said new cpu installed press f1 to run set up.
if you bypass f1 it ran giving warning opti 1 and 2 fan speeds all just under 1200 rpm.
I would really love an asus board but cannot get them to post.
everything runs ok with my 990ax ud3

It looks like ive found a problem with the bios in the 2 good asus boards I don't kow what to do no I so much like the 2 boards
 
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raja@asus

raja@asus

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Sep 28, 2011
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UEFI is set to alert of fan speeds below a certain threshold. You can go into UEFI and change the threshold. Go into the fan section of UEFI and set "fan speed low limit" to "ignore". That will cure the F1 halt. It's just a safety warning - nothing to be alarmed about. Think you got confused there.

The F1 message for new CPU installed is to make sure you go into UEFI and change any necessary parameters when a new CPU is detected by the system.

-Raja
 
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raja@asus

raja@asus

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Sep 28, 2011
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As I told you above on first POST all boards will do this. There is no issue. Press F1, go into UEFI and set what you need to - set the fan thresholds as I told you before, then save and exit UEFI by pressing F10.

You will need to navigate to the fan speed/monitoring page to set the fan warning threshold.


There is no point in RMAing a board for this, as all board will do this. You just need to set the board up properly for your system.


 
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raja@asus

raja@asus

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Sep 28, 2011
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Which functions did you disable exactly? You need to go into the fan control section, set advanced for the fan headers and then set "fan speed low limit" to ignore. If unsure, save UEFI screenshots to a USB flash drive (fat32 formatted) convert to JPEG and upload here. You press the F12 key in uefi to save a screenshot to UEFI.

The info in the above paragraph is for the "CPU fan speed" warning halt message at POST only.

The board will F1 halt with an "overclocking failed" or new CPU inserted message if it is not stable. Somewhere between this and the above lies your issue. If it's an overclocking failed message or a new CPU detected upon every POST then the issue is likely memory related. I would use one memory module only and see if the issue persists. If it does I would set it to a "safe" speed manually, update UEFI to the latest version (check the ASUS support page for the motherboard) and then look at adjusting some of the memory sub-timings and voltages.

For memory sub-timings on these cheaper kits, I usually suggest setting READ to READ delay and Write to Write delay to 5 or 6 clocks. Might also need to bump CPU/NB voltage a bit depending upon how good the memory controller in your CPU is.

-Raja
 
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