So you should not be able to boot up your old OS. This can be a big problem for folk that want to move to a new PC and pick where they left off.
Nothing seems wrong about what happened. It's a common complaint about Windows. It just doesn't handle such moves.
I've recently bought a new pc build:
AMD Ryzen 1800x
Cryorig H7 Heatsink
Asus Rog Strix x370-f gaming mobo
Ripjaw 16gb DDR4
& swapped in some of my old parts:
EVGA 650BQ Power Supply
Geforce GTX (Titan X GPU)
& my Hard Drives.
I was told i should be able to boot to my SSD with the old OS perfectly fine & not have to reformat first.
After i finished putting everything together into the new case & tried to start it up it powered on and flashed the mobo logo with boot options, then the screen goes black with a flashing underscore in the corner and restarts. I've went into bios and specified my SSD as the primary boot option (the mobo detects both of my ssd's, even specifies brand/capacity/partition), and the same issue occurred. I've tried to boot straight to my brothers SSD instead and it came up "Boot MGR missing. CTRL+ALT+DLT to restart", which i guess is something that happens to him on his normal pc when his motherboard doesn't recognize one of his HD's, which leads me to believe it's something with my SSD. So then i backed up important contents, setup a Windows install drive (USB) & tried to boot from that. All seems to go well until i get to the windows screen where the repair/install options are & then my keyboard and mouse won't work. (Keyboard seems to lose power as the backlight goes out, and the mouse is still lit up but not showing up on the screen).
Any ideas on where to go from here? I'm a digital artist, and being without a proper workstation is costing me time & money.