I was recently working at a client site on their ancient laptop computer, which was horrendously slow regardless of whether I was working on the hard drive or the server. It did have Windows XP and MS Office 2007. I did a disk cleanup, and defragged 3 times! This didn't help; thank heavens I don't have to go there again! But out of curiousity, has anyone done a defrag with the end report stating that hundreds of files cannot be defragmented? I don't mean the "files that cannot be moved" indicated by the green bars. I mean big blocks of red bars indicating "fragmented files". I've never, on any computer anywhere, had a defrag return a report telling me that a huge number of files could not be defragmented. Do you know of any logical reason for this? Or did this horrid old laptop probably have other bad nasties going on? Thank you.
How much free space was on the "ancient" drive? There may not have been enough room to "defrag" large files. If this is the case then move the largest files off the drive to an external drive and then try defragging.
Dyson has a good suggestion - a new drive but make it bigger than the one it will replace (do some research on what you will have to do to make this happen though - I bought a drive twice the size of my crashed drive but with the restore I only see half of the new drive (?).
Also a new computer might be the best solution depending on how ancient this computer is.