From long time reading posts in this forum, NOT from personal experience:........
I assuming that you have recently used the recovery disks and that all is running as it should?
Also that your two local disks are C: & D: while the CD device has the E: position?
If my guess is correct then Packard Bell put the data necessary for recovery into D: (The CD you burned carries instructions to extract vital bits of the OS and overwrite the damaged original code in C:)
The normal arrangement would be for D: to remain hidden but accessible via that recovery CD.
Now that all seems to be working again it may have gone to the default (D: hidden) once more.
You may be able to see the hidden partition through Folder Options Tools etc., but if the computer is working again leave it and don't worry.
You didn't say which OS you are using and it doesn't matter unless you still have problems in which case post as much detail as you can to allow better brains than mine sort the matter for you.
Whatever, the info. won't have been absorbed in Drive C, just the vital bits copied to replace the corrupted ones.