I bought a new Toshiba P850 laptop with Windows 8 OS and a 1 TB Toshiba USB HDD. I copied all my files from my old laptop to USB HDD successfully. Then I started to move from USB HDD to my new laptop. Most of the files moved without an error. Then I saw that coping speed dropped to 0 kb/s. I canceled it but the window of file copy was still there. I closed it with the [X] button. But there still sounds were coming from the internal HDD. When I check the task manager I saw a heavy load on the internal hdd. I reboot and retried moving the files that are still on the USB HDD. The same thing happened again after 10 seconds of file transfer. I did many restartings and deleting control driver of USB but nothing fix the problem.
Then I thought maybe Windows Explorer file copy system in Win8 was buggy so I tried my favorite window manager Total Commander. It was freezing after a couple of seconds like Windows Explorer. I don't know why I tried but I opened a second window of Total Commander and started moving another folder from USB HDD to internal HDD. This time it didn't freeze and very interestingly the first file moving process of TC that was frozen, also started working. It was insane. I waited till it finished. After one of the process finished the other one frozen again. If I move another folder from the other window of TC frozen one was going on transferring again.
Then I tried to move a folder with Windows Explorer again until it freezes. When I move a folder from TC, frozen process of Explorer was also starting to work normally.
How can this be?