If that thing is crapping you up, then you've got to reformat it and install a fresh copy of operating system of your choice compatible to your computer. If you don't have any OS to install or probably you want it the way it was, your choice is to delete the folder/directory of the software you want to remove, which is usually located in C:\Program Files. The problem with this approach is if one of any files you deleted is a shared one, the program dependent on it will not be able to start properly and much worse if you delete a different folder or directory. Make sure you permanently delete it and not like just moving it to your recycle bin. If space is really you're concern, you have an option to purchase a brand new one with large capacity supported by your old system - install it with a new OS & applications and turn your old hard disk into secondary drive. Then transfer your documents to your new one. This strategy will ease you of pleading for more spaces.
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