It doesnt detect any hard drives. I tried a lot of different combinations. I have 3 hard drives and I tried plugin in 2 of them at a time and even 1 at a time in different ways, I even switched the power supply back to original and my computer just seems not detecting any of them and gives me an error saying to select the proper boot media. This has never happened to me before. This is just weird, every time I switch a hard drive my computer completely crashes and it takes me a few days to get it fixed...and I don't have any money to pay a professional to take a look at it.