Why Is My Computer So Slow?

Written By Alexander Ploderer

A slow computer is usually caused by one of a handful of things. Most are easy to fix yourself.

Most common causes

  • Too many programs starting up automatically when you turn on the PC

  • Not enough free storage — less than 15% free space hurts speed

  • Old hard drive (HDD) instead of a modern SSD

  • Too many browser tabs or background apps open

  • Windows hasn’t been restarted in weeks

Free fixes to try today

  • Restart your computer (a full restart, not just sleep)

  • Open Task Manager → Startup → disable programs you don’t need

  • Delete files from your Downloads folder

  • Run Windows Update — updates often include performance fixes

Alexander Ploderer
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