Installing programs you never really use drains those resources uselessly and slows down your computer. Each program installed on your PC uses system resources. Also, you might have downloaded other applications and programs from the internet. Whenever you buy a laptop or a PC, your system will usually have quite a few ‘try before you buy’ and trial versions of software preinstalled. Remove Unused Windows Features and Programs Whatever the reason, there are a number of fixes you can try in order to rejuvenate a slow system running on Windows 7. The reason for this sluggishness may be that you are running Windows 7 on an old or out-of-date PC or maybe there are just too many programs and applications vying for a slice of the CPU.
However, sometimes your system becomes sluggish and you wonder how you can improve its performance. Windows 7 is already a highly responsive and fast operating system compared to its predecessors.