Slow boot with MS-AHCI on Gigabyte AM3 boards

[Nvidia256]

Recently I purchased an Intel X25-M G2 to go along with my Gigabyte 790FXTA-UD5. Because of the fact that only MS-AHCI drivers are capable of passing trim along to the Intel drive I have no choice but to use them.
There seems to be a serious problem with some Gigabyte boards. When I goggled this issue what surprised me was that 90% of the people who had the same problem as me, all had Gigabyte Boards.

Here is the exact problem:

When the system boots to Windows 7 upon reaching the splash-screen(windows boot screen) it hangs for 40 sec while the windows logo pulsates. It makes no difference weather it's I use a standard HDD or a fresh install of windows or weather I have only one primary drive attached.

When booting into IDE mode or using the ATI AHCI driver it boots instantly, there is no delay, I only see the windows logo/boot screen for 3 seconds. I know of other people who use the MS-AHCI drivers on different board manufactures who do not experience this problem. So it seems to be mostly isolated with those running Gigabyte boards. I am assuming that this is a gigabyte Bios issue than can hopefully be fixed. Maybe this has to do with the AHCI ROM bios. I know Gigabyte with there past Intel boards had a huge delay with there AHCI rom initialization and booting in AHCI.

If anyone can please shed some light on this issue I would be eternally grateful as would the many others dealing with this problem.

 

[kranky]

Does anything show up in the Event Viewer?
If you tell Windows to create a boot log, does anything show up there?

 

[notposting]

Well, a big problem is the AHCI in the AMD southbridges--been broken going back at least to SB600 and if I remember right even before then.

I know it's not exactly the same, but I was having issues with both XP and Vista and the AHCI setting.

ahh, found my post over at SPCR. At the very least it's informative and should take your mind off your problems for a bit: linky. Though as you mentioned it may also be a Gigabyte specific implementation in their BIOS as well. Hopefully they fix it for you.

 

[Nvidia256]

I will try to get into contact with gigabyte and inform them, Sadly I have a strange suspicion they already know of this issue and will most likely do nothing about it.

 

[Nvidia256]

just as I thought, Company made it clear to me that this is not an issue they have any interest in fixing

 

[alexruiz]

Why do you say the ATI AHCI driver doesn't pass trim?
The MS driver is generic, the ATI isn't...