There could be many reasons why your Computer is running slowly. Some possible reasons include:

 Some reasons to running computer slow

1. Not enough RAM: If your computer doesn't have enough memory (RAM), it can slow down when running multiple programs or when working with large files.

2. Too many programs running: If you have too many programs running at once, your computer's performance can suffer.

3. A virus or malware: Malicious software can slow down your computer, or even cause it to crash.

4. Hard drive is almost full: If your hard drive is almost full, your computer may not have enough space to function properly.

5. Outdated software or hardware: Software and hardware that are out of date can cause your computer to slow down.

There are several ways to troubleshoot and improve the performance of your computer. You can try closing unnecessary programs, freeing up disk space, updating your software and drivers, running a virus scan, or upgrading your hardware if necessary.