So here's my problem... I want to refresh my PC, but I can't. When I go through the process, the computer stops on a blue screen saying my PC needs to be repaired, a required device isn't connected, and the error message 0xc0000225. The computer boots fine, the reason I want to refresh it is because the speed of it has decreased significantly after a faulty hard drive. I'll explain what happened:

The hard drive that came with the PC started to fail (lots of clicking noises and such). It was still under warranty, so I was able to get a replacement. In order to do so I was told to send them the faulty disk and they would send back a new one, blank of course. So I ripped out an old hard drive from one of my older computers and cloned the faulty one onto it so I would have everything (including windows 8) and so I could use my PC during the week or two the disks were in the mail.

After cloning to the old disk and booting from it, I noticed the boot time was significantly longer, and so was anything that involved reading/writing to the disk. I figured it was the disk's fault since it was old (I don't know anything about computers). I also made a full back up on an external hard drive and a recovery disk on a CD to go with it just in case. 

Now that I've received the new HDD in the mail, I once again just cloned everything from the old HDD to it. I was expecting the sluggish disk times to improve back to what they used to be, however they didn't. That's when I decided to try a refresh and hope that would fix it. But I'm receiving the error.

First I don't understand why the boot time and such are so slow. Secondly I don't know why I can't refresh the PC. I tried to boot from the recovery boot disk thing I made with the back up, but my computer won't boot from it. The computer seems to ignore the boot options in BIOS completely, since when I cloned to the old disk the first time and had both the faulty HDD and old HDD plugged into the computer, I tried switching the boot order of the HDDs in BIOS to test the cloned disk and it still booted from the faulty one. It was only after I removed the faulty disk that it decided to boot from the other bay. The same thing happened when I got my new HDD... I tried multiple times to boot from the new HDD after I cloned it, kept switching the boot order in BIOS, but it still continued to boot from the old HDD. So I just pulled it out, and now of course it boots from the new one. Moving the priority of the CD to boot first doesn't work, so I can't boot from the CD (unless maybe if I remove the HDD, but I think that would make it pointless). So I'm kind of out of luck with the boot CD unless I can figure that problem out. It seems every solution for a problem I have seems to come with its own problems.. the cycle is endless! Haha.

Sorry for the long read. I'm going to keep trying things, but if someone has suggestions for any of the problems, that would be great. I guess I'm mostly concerned about not being able to refresh the PC, that seems like maybe something is missing or damaged somewhere. I don't know if I should contact the OEM again and ask them for help or what. I really don't care about the data on my computer, I just don't want to lose my OS I guess.  

the error code means that something was not found:

C:\Users\Andr>err 0xc0000225
# for hex 0xc0000225 / decimal -1073741275
  STATUS_NOT_FOUND                                               ntstatus.h
# The object was not found.
# as an HRESULT: Severity: FAILURE (1), FACILITY_NULL (0x0), Code 0x225
# for hex 0x225 / decimal 549
  ERROR_INSTRUCTION_MISALIGNMENT                                 winerror.h
# An attempt was made to execute an instruction at an
# unaligned address and the host system does not support
# unaligned instruction references.
# 2 matches found for "0xc0000225"

to figure out why Windows boots slowly follow my guide:

Trace why Windows 8 boots, shuts down or hibernates slowly
http://www.msfn.org/board/index.php?showtopic=158252