User blog comment:Alix Weaver/Installation Errors/@comment-3109473-20120106215948

Have you tried defragmenting your hard drive? Assuming you use Windows, right click on your hard drive, select "Properties..." and then something about defragmenting disk. Choose which disks you want to defragment and start defragmenting. That might work, although it can be useless as well. Anyway, the process will take several hours, depending on your data. Then restart your PC and see what happens when trying to install TS3.