A PC can be slow for several common reasons including full or nearly full RAM (memory), insufficient free storage space on the hard drive or SSD, running too many programs simultaneously, malware or viruses, outdated system updates or drivers, and too many automatic startup programs. Other factors include hardware limitations such as an older or low-quality CPU and insufficient RAM capacity, fragmented hard drives (for HDDs), or overheating of components. Restarting the computer often helps by clearing RAM and stopping background processes that consume resources. Managing startup programs, regularly updating software, cleaning out unnecessary files, and scanning for malware also improve performance.
