Often users face this problem, after uninstalling Linux, and re-partitioning the un-allocated space. What actually happens is that they keep on getting stupid errors saying “Not enough space on the disk to complete this operation,” whenever they try to create new partitions using the Disk Management tool in Windows.
The reason behind being that the Windows Disk Manager is not… Ah capable of creating partitions in the middle of the disk, and thus, it displays the error. Users who created the Linux partitions at the end of the HDD, wont face any such difficulties.
Anyways, the solution is to go for some advanced partitioning tool e.g. GParted which is for Linux. There might be a Windows compatible version, but I never was successful with my searches, so you might wanna go for the Ease Us Partition Master, which comes with a lot of advanced features, and would certainly get you across this error.