Dvd Drive Burning and Copying Errors

I have a problem here. Yesterday I had to wipe my Comp because of a dirty Virus I had on my comp. I backed up some files I wanted to save on a few DVD-R Disk. I burnt these disk/ wiped my comp and re-installed windows and now extracting the files i burnt, but then i have a problem. Some of the Rar files makes it through without any error, but then a few other files on the same disk Doesn’t want to copy over from the disk to my comp. Its freezes from being copied and won’t let me finish copying the other files over.:sad:

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