1. Not enough hard drive space.
2. Left over programs and bad files.
3. Data Corruption.
4. Missing Windows updates or outdated drivers.
5. Computer is overheating.
6. Corrupt OS.
7. Bad Hardware.etc.
Note: This page only cover an overall slow computer and not a computer that has a slow boot up.
Below are steps for Microsoft Windows users are to take to speed up their computer or determine why the computer is running slow.
Not enough hard drive spaceVerify that there is at least 200-500MB of free hard drive space. This available space allows the computer to have room for the swap file to increase in size as well as room for temporary files.
Determining available hard drive space.
Regaining computer hard drive space.
If the problem persist then you can follow the below steps for more:
These software can help you Speed up your PC, enhance its performance, and get rid of registry errors. Prevent system crashes and improve response time.