Ok so I have a weird question and I'm sorry if it has been asked before I wasn't able to find any similar questions. I have a computer that I built in 2009 and at the time I had an older type hard drive so I used it. Sometime after putting Windows on the older drive I bought a sata drive and hooked it up for more storage. Now I have an external drive that I am not able to find the power cord for it so I unhooked my DVD rw drive and hooked the external up as an internal drive. It worked and I was able to access the drive but now, weeks after it had worked, when the external drive is hooked up I get a msg of bootmgr missing. I can disconnect the drive and it boots just fine but I can't get the pc to see the external anymore. I have things on the drive that I don't want to lose. Is there anything I can do. Thanks in advance and sorry for the long post.