If I turn the computer on or if I do a restart windows 10 fails to complete bootup and hangs with a blank screen after the windows logo and rotating dots come up. HOWEVER - if I go into the BIOS then select the disk it will boot into windows fine. (It is the only drive connected to the system at the moment)
I have tried a number of things and DISM run from command line tells me there is nothing wrong.
It is a fresh install of windows 10 after a complete crash I presume was caused by a faulty graphics card i swapped in to the system.
It did take me several attempts to install windows onto the disk - but it was a brand new SSD when i started.