I have been using my Intel 750 as my main drive for over a year now, it's brilliant.
I was able to install Windows 10 on it and lived happily.
The Intel 750 is a PCIe NVMe SSD that resembles this specific card.
A few days ago I decided I wanted to install Window 7 os on a new raid 0 drive I have installed in my computer. I wanted to use it for Duel Booting.
After changing some of the bios CSM boot options and disabling Secure Boot I managed to boot a Windows 7 install usb and installed on this new drive.
To disable Secure Boot I had to delete the PK Keys in the bios. More on that here http://www.tomshardware.co.uk/answers/id-2225322/asus-uefi-boot-utility-secure-boot.html http://www.tomshardware.co.uk/answers/id-2225322/asus-uefi-boot-utility-secure-boot.html
Ever since that, I can't find out how to boot back onto my 750. When installing the Intel NVMe drivers on the Windows 7 drive I can see all the files and use the 750 (E:).
All the files appear to be there untouched.
But even after messing around with lots of settings, I am unable to figure out how to boot back into it.
I did check the drive's health, but considering it has been running properly for quite some time I am certain that this isn't a "check compatibility", "check the connections" and "swap PCIe slots" problem. -It's in the recommended slot anyway.
Using EasyBCD to create a start up boot option for E: didn't work. It tells me that something has happened to \Windows\system32\winload.exe.
The Intel 750 does not show up in the bios' boot options.
It does however show up as a PCIe device.
I have followed Intel's Nvme_boot_guide pdf and copied their CSM settings since their bios picture matched mine.
I also tried following this forum post https://social.technet.microsoft.com/Forums/office/en-US/1b2045b9-7fef-47f0-aea3-1e185fb7544c/fix-wi... **FIX** Winload.exe Is Missing Or Corrupt (No Its Not)
Perhaps it is undiscoverable from the Window 10 USB because it doesn't have the NVMe drivers?
I have also created a Windows 10 boot usb and messed around with some of the options there. Not entirely sure what I was looking for, I messed around with a few options there but no miracles.
I have run out of ideas short of reinstalling Windows on the Intel 750 and praying that I will be able to boot off of it after that.
Thank you all for listening and helping me.
We understand you have an https://ark.intel.com/products/86739/Intel-SSD-750-Series-1_2TB-12-Height-PCIe-3_0-20nm-MLC Intel® SSD 750 Series that you're no longer able to boot into.
Considering the troubleshooting you have already performed, it's fairly safe to say that both your SSD and your Windows® 10 installation should be perfectly healthy.
Please keep in mind that making changes to your UEFI platform keys is risky, and other users on the Tom's Hardware thread your shared with us also reported issues booting after removing the secure boot PK. Most motherboard manufacturers will usually warn against this.
Our first recommendation will be to check with your motherboard manufacturer (or their support website) to see if there's a BIOS update available for your motherboard. Or to see if returning your BIOS back to defaults or performing a rollback to an older release could undo these changes.
It's also possible that your BIOS settings to boot into a RAID array may not be compatible with the changes needed to boot into an NVMe SSD. Your motherboard manufacturer could confirm or deny this as well.