brand new m.2 drive not booting after windows installed

jon mallozzi
jon mallozzi used Ask the Experts™
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my old intel m.2 128gb drive was getting full so i decided to buy a brand new 250gb samsung 960 evo m.2 and clean install windows 10 on it. the install went fine i deleted all old drives except for my 5tb hard drive that i used for everything on my pc but after it restarted for the first windows updates it never booted again. I tried changing it from uefi to legacy and made sure the drive was detected and number one on the boot list but still nothing worked. In uefi it goes past the asus screen and gives me gray screen that never changes and on legacy it goes past the windows screen and gives the same gray screen. Windows repair gives me the same grey screen. This is a custom built pc by a company that put it together perfectly. I have asus x99-e motherboard and all my parts support uefi and worked fine with it before. i have no clue how it's not working when my old one worked perfectly fine. any tips on getting windows installed and booted so i use my computer again
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System Architect
Commented:
Did you have the rest of the drives connected when you installed windows?
If yes, I'd suggest removing all drives but the 960 and try to reinstall windows.

If that fails in the same way, try checking the disk using a linux livecd and smartctl as shown here : https://www.percona.com/blog/2017/02/09/using-nvme-command-line-tools-to-check-nvme-flash-health/

I highly doubt it but it could be a faulty drive..
Top Expert 2013
Commented:
try putting the old drive in again - alone, and see if that boots ok - then you're sure all other hardware is ok
Tom CieslikIT Engineer
Distinguished Expert 2017
Commented:
Do you see any error after restart ?

Did you try recovery console from Windows 10 and option to repair boot ?
Tom CieslikIT Engineer
Distinguished Expert 2017

Commented:
Best solution provided, no more other questions from author

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