no boot device

2 M.2 installed on Motherboard, use to work fine. Transferred the Motherboard into a new case with a new CPU cooler. Now the BIOS is unable to find the boot device. I have attempted to boot with CSM enabled and disabled. I have attempted to boot with both UEFI and Legacy mode. I have also reset...

I've got a pre-built Acer Aspire TC-603 (i5-4440, 8GB ram, 1TB hard disk) to which i've added an GTX-1050ti. I've been planning to add an SSD to my PC. Only problem was, there was a password to get to the bios. In order to remove te password I used the CLR_CMOS jumper on the motherboard. The...