I am having a strange problem using some backup problems. A brief(?) background first.
I recently purchased a WD 2 TB external hard drive. When I connected it to my desktop computer, the computer would recognize it as a 128 GB drive (this is after initializing and formatting it on my laptop, because I had problems doing that on my desktop). On my desktop, I kept getting messages to format the drive, despite the fact that this had already been done. With the laptop (also Win 7 Home premium), there are no issues. To try to solve the problem, I disabled some services, among them an Acronis service and an Easeus service. The drive then behaved normally and was recognized by Windows Explorer and in Disk Management as a 2 TB drive. I was able to backup folders from my desktop to the external drive, and to create an image of my laptop using Easeus Backup.
Now to the problem! When I tried to backup my desktop using Acronis TI or Easeus, I had to re-enable the services I had disabled earlier. When I did that, I went back to Windows not recognizing the drive - it said it had to be formatted. In Disk Management, the drive showed as a 128 GB drive.
I did manage to make a backup of the desktop using Windows backup, but that took several hours. I would like to be able to use Acronis or Easeus for the backup, but that seems to be impossible.
Any ideas about what could be causing my problems?