I put a 500GB 850 EVO in a Lenovo E520 laptop (replacing the HDD) about 6 months ago. Its on Win 10 Pro. It works fine except....
when it boots up it goes rapidly to the blue Windows window thing, then it beeps, the logo disappears to leave a blank (but I think still on) screen and it just sits there for 77 seconds (yes I timed it), then its back to normal, login screen etc all fine. I presume its not a boot order thing as it goes to the initial Windows logo pretty quick.
Anyone any ideas please ?


