So noticed my 1TB HDD on desk top going bad. (randomly not allowing access, saying it is not present) Shrugs no big deal it is a storage drive (I have 2 SSDs already 1 for operating system and every day programs and the other for games I regularly use) My case has 2 HDD bays with cabling already in case of such an event and I have a spare 1TB HDD that I had in a previous build so I am like welp I guess I will slot this in, set up and transfer the data from the dying drive over to the other one if I can. So I turn off power, unplug etc and operate. I turn on the computer...nothing fracking boots past a recovery screen which loops. So spending some time troubleshooting I discover that I cannot boot up properly with any of the HDDs hooked up, so here I am scratching my head not pleased at all as I am kind of needing the extra space. RAGGLE. First time I have encountered such an event. This is a Win 10 machine, damaged 1tb is a WD black and the replacement is a 1tb WD blue. I know I have plenty of power as my supply is more than beefy enough. Any suggestions would be amazing.