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๐Ÿ’ปTech Supportยท 8 min read ยท January 18, 2026

Computer Running Slow? 10 Ways to Speed It Up

A sluggish computer does not need replacing. These 10 fixes bring aging PCs and Macs back to life.

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Written by Alex Chen
Senior IT Specialist ยท 10 years experience
HelpByExperts computer speed optimization guide for slow PCs and Macs
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In this article
1. Fix 1: Restart Your Computer2. Fix 2: Disable Startup Programs3. Fix 3: Free Up Disk Space4. Fix 4: Upgrade to an SSD5. Fix 5: Add More RAM

Fix 1: Restart Your Computer

If you have not restarted in days, do it now. Restarting clears temporary files and stops memory leaks. On Windows, hold Shift while clicking Restart for a full reboot.

Fix 2: Disable Startup Programs

On Windows: Ctrl+Shift+Esc, click Startup, disable anything you do not need. On Mac: System Preferences, Users and Groups, Login Items. Most people can disable 60โ€“80% of their startup programs.

Fix 3: Free Up Disk Space

A nearly full hard drive dramatically slows everything. You need at least 10โ€“15% free space. Delete old downloads, empty the recycle bin.

Fix 4: Upgrade to an SSD

This is the single biggest performance upgrade. Replacing a traditional hard drive with a solid-state drive makes everything 5โ€“10x faster. A 500GB SSD costs $40โ€“60.

Fix 5: Add More RAM

If your computer has less than 8GB of RAM, adding more is a cheap and effective upgrade. 8GB is the minimum for comfortable modern use; 16GB is ideal.

Pro Tips

โœ“Check Task Manager or Activity Monitor to see what uses the most resources
โœ“Browser extensions are a common cause of slowness
โœ“If your computer is more than 8 years old, upgrading may not be worth it

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