Before we go any further we recommend that you look at these links first. Make sure your board is compatible with this drive.
Make sure your Windows is 64 bit and that you have the NVMe driver. MSI has added NVMe support to all their Intel(R) 9 series chipset based systems as you can confirm here: MSI Global - The best gaming gears maker in the world - Now, how you are installing may matter. A USB thumb drive is not easily formatted for the uEFI install required here. If you are using the 64 bit Windows 7 DVD and picking up uEFI DVD as the boot drive, that should not be an issue.
Another possibility here is to make sure the BIOS is updated. A 32 bit OS will not boot an NVMe device.
Ah, I am using a USB thumb drive, so that may be the issue. Let me try from the original DVD. That works, past that issue anyway. Now it creates partitions, then says the motherboard won't be able to boot from them. So I loaded Win 10 RC installation, and it said it couldn't boot from those Win 7 partitions either. So I deleted those, and had the Win 10 RC Installation create partitions, and it said those were fine. So I went back to Win 7 installation, hoping it would like the partitions Win 10 created, but it said it wouldn't be able to boot from those either. I was able to fully install Win 10 RC with no issues. But I really want to install Win 7 for now.
System info: Intel i7 5820K cpu, MSI X99A Mpower motherboard, with G Skill 8GB 2666 memory (32GB total), and a Sapphire Radeon R7 240 video card. Trying to load 64 bit Windows 7.
Software: Latest BIOS for the X99A motherboard, and I tried the Intel 750 CD that came with the drive, as well as the latest drivers for the 750 SSD.
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I think I got it! Win 7 is loading now. Understanding that UEFI expects GPT disks only and not MBR disks helped me, and making sure I was booting the DVD as UEFI. It still won't load the OS onto the 750 after loading the drivers was a bit I found on the internet by the user k4nth posted on May 6, 2009:
1. Load the RAID driver from CD. (Vista driver will work) <ie: in my case Intel 750 driver and Windows 7>
2. Install the driver and create partitions.
3. Remove the driver CD and insert the Windows 7 DVD.
4. Click on Refresh and the error should disappear.
Once I did the above 4 steps, then I was allowed to choose the 750 drive and start loading the OS.
Oh, one more thing: I had a regular hard drive in there, and instead of creating the 4 partitions, one time it saw the System partition on the regular hard drive and didn't create one on the 750, another time it ended up with two System partitions, and then it got confused. I had to remove the hard drive, and then delete all the partitions on the 750 and let it create them again.
I hope this helps others. Windows 7 just booted off the Intel 750 SSD! Thanks for the help!