Why Your Computer Is Running Slow (Top 6 Causes + Fixes)
A A slow computer is one of the most frustrating things ever — especially when you’re trying to work or relax. But slow performance is usually your computer trying to tell you something.
Here are the most common reasons your computer slows down and what you can do to fix it.
1. Too Many Programs Running in the Background
Apps and startup programs drain your system memory.
Fix:
Close anything you’re not using and remove unnecessary startup apps.
2. You’re Low on Storage Space
When your hard drive is almost full, your device slows down dramatically.
Fix:
Delete old downloads, temporary files, duplicate photos, and unused apps.
3. Malware or Viruses
This is one of the top reasons for sudden slowdowns.
Malware steals processing power behind the scenes.
Fix:
If your computer feels unusually laggy out of nowhere → get a virus check.
4. Your Computer Needs Updates
Outdated software can cause crashes, lag, and security issues.
Fix:
Install updates for your operating system, browser, and apps.
5. Low RAM
If you use heavy programs (Zoom, multiple Chrome tabs, editing tools), your computer may not have enough memory.
Fix:
Close tabs and apps — or consider upgrading your RAM if possible.
6. Overheating
Dust, blocked fans, or poor ventilation make your computer slow to protect itself.
Fix:
Make sure your device is in a cool area and not sitting on a blanket or bed.
When You Should Get a Professional Diagnosis
If your computer stays slow no matter what you do, there may be deeper issues like:
Hidden malware
Failing hard drive
Corrupted system files
Hardware problems
These require a specialist to identify and fix properly.
Book a Computer Diagnosis
I can help you identify what’s slowing your computer down and get it running smoothly again.
✔️ Book your diagnosis here: [insert link]
✔️ Free 15-minute troubleshooting calls available