found some links that may help
https://communities.intel.com/thread/80552
http://www.win-raid.com/t1243f16-Guide-How-to-boot-from-an-Intel-series-SSD-with-Windows-or-on-a-GA-Z-X-UD-H.htmlplus this quote from a thread
Quote:
I appear to have figured it out.
The intel documentation recommends setting the CSM (compatibility support module) to allow booting from NVME / PCIE in windows 7. however the MSI gaming 5 bios has no CSM.
Under the "advanced" section in the bios, there's a sub group called Intel Ready boost or some such. Once enabled a number of other options appear, including the ability to set boot from IDE to AHCI, allowing booting from NVME and changing default boot to PCI-E first.
I don't know why it's buried under some obscure section instead of in a CSM as notated in the intel installation guide.
Using these settings I was able to get it to cold boot into both windows 10 and windows 7 with GPT format. I'm using it with windows 7 now and it has been stable all day through countless reboots and several shutdowns / startups.
Booting time has improved dramatically as well.