I ve faced a lot problems lately with my PC especially with the connectivity between hard drives and cables (power or sata I dont know for sure) when I need to open my PC case. But suddenly after the last time I opened the case and replug the cables to both hard disk and dvd drive I cant even boot Windows. I tried two working disks from another PC (both disk with Windows 10) and the message was no bootable device detected. When I use my disk either it wont boot at all or it will appear to me an error with red letters (!!!!x64 exception type...e.t.c), I dont know if its the disk, because the other two didnt boot either. Also my dvd drive cant be recognized by BIOS even if I unplug and replug the cables. I dont know if its motherboard or even the power supply.