DH87MC - upgraded memory from 8 to 32GB, began working well after adjusting the memory params on the Performance page.
I then decided to optimize (?) it by adjusting the 4 timing params to match the memory specs. Default had been 9 9 9 24, which I changed to 10 11 10 30. Saved and restarted with F10, Yes. Worked okay, but I noticed that the timing values were back to default. Set them to memory specs again, restarted, got the 3-beep 'no memory' error.
So far I've been unable to clear the CMOS (or perhaps doing so did not return it to working defaults?) using the remove-the-battery-and-wait method. (The PSU has an AC switch, so I didn't actually unplug it, though. Trying that as I write, no hope though.
Other than shopping for a replacement motherboard, is there anything else to do? Although there was no obvious reason the memory was damaged, I did the normal drills of trying the original memory in various slots. There's nothing external plugged in except for SATA drives, a (Displayport) monitor, and an ethernet connector (which LED shows activity while the bios is beeping at me).
I don't pretend to understand the rules, but Patriot PV332G186C0QKBL says 10-11-10-30.
In any case, I would be happy if the bios were to reset it to 9-9-9-24, as I sit here waiting for Newegg to email me that I can pick up my replacement motherboard.
By way of a grouse, I have to comment that it's a shame that Intel gave up on desktop boards - I used to depend on that product line for robust reliability - but it's slightly more shameful that they didn't stop selling them a year or so sooner, before this miserable lot was foisted on the public.
After leaving the battery out with the PSU unplugged for a couple of hours, I cleared CMOS. The system always gives 3 beeps (repeatedly). I can get to the startup menu and thence to setup by holding the power button through the four-beep sequence, although I may have to try a couple of times.
After verifying/setting CMOS data I restarted; still 3 beeps, but the special power-on procedure still gets me to that special menu, and CMOS.
The memory works fine in a different motherboard and provides appropriate XMP data, and that board automatically sets memory timing correctly.
The Intel board doesn't give me a opportunity to select an XMP profile - choices are manual or auto, and auto does not choose the correct timing for the given memory module.
I am not an Intel employee so this is not a definitive answer, but in my experience DH boards only offered the manual/auto choice while DZ boards offered the XMP selection. I have a DH67BL board which accepted my changing the RAM settings from 9-9-9-24 to 7-7-7-24, with a noticeable increase in speed.
And I agree with you regarding Intel boards no longer being made. Intel has made a few strange decisions, with giving up on the smartphone market being one of them.
Thank you for your feedback.
The supported cas latency for this motherboard is 9, any other latency will be overclocking, and from our it is no supported.