Kernel Security Check Failure Windows 10 Z400

[MohsinAbbas]

i just installed 3 days before windows 10 into my z400 workstation.
Today i while usual net surfing rcvd the blue screen error
Stop Code : Kernel Security Check Failure.

When it restarted after that blue screen.
it gave the error Missing Operating System.

 

[Trouble]

That doesn't look good.
Assuming you haven't done anything to your boot order in the BIOS or that you haven't done anything physical as to how your hard drive(s) are connected to your motherboard....
I suspect that your hard drive might be failing.

Might be time to remove it and attach it to a second computer and see if you can at least back up any critical data and then perform a Check Disk
chkdsk /R
On the drive and see what the utility reports as to the condition with respect to KBs in bad sectors.

In the meantime, get your hands on a new replacement and try your install on that.