Trying to install SSD and HDD, can't use both at the same time?

Aug 21, 2013
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10,510
My homemade computer worked fine when I built it yesterday, but today it went to a black screen and gave me error 0xc000000e and saying hardware was changed. During this time, it tells me to put in the Windows CD and repair. I put it in but can't repair because I can't use my mouse or keyboard. They just don't work.

When I have just one drive in, my keyboard/mouse work and I can use the bios. But when I put both in, it stops again.

Also, when I put just my SSD in just now, it brought up a screen like I needed to install Windows again. I have the OEM version, so I can't, right? So I tried to repair it, but it had no restore points at all. It said I could download drivers for something, but I don't have CDs for these hard drives.

Help?