Intel DG41MJ with Xeon L5420

I have copied sentences below from overclock.net:


Hi there,

This is my first post.
Firstly excuse me for my crappy english.
So what is my problem? (other than that above)
I have an Intel DG41MJ motherboard, equipped with latest BIOS.
I bought for this a Xeon L5420 processor, with LGA771->LGA775 converter.
I have done the mod and it's working fine.
But there are some bugs:
CPU fan running only at full rev.
It is a problem, because I would like to use this MB for music listening mainly.
Processor is also running at full speed constantly.
Coretemp shows nonsenses.
According to CPU-Z it is lacks some functions like SSE4.1, VT-x.
Soft reboot not working at all.
I think these problems caused by wrong microcodes in BIOS.
But I can't find a solution for Intel BIOS.
Is there anybody who has a solution for this MB?

Kind regards,
Gyuri

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I have modded the last BIOS, with fresh microcodes for L5420.
(see attached)
But I can't flashing it to the motherboard.
I have tried to make checksum for the new BIOS, according to the original, but it doesn't helped.

  L5420.JPG (Size: 185.38 KB / Downloads: 2)

  MJ0009.TXT (Size: 3.1 KB / Downloads: 0)