How to Speed Up a Slow Windows Computer
Before you spend money on a new computer, try these proven steps to speed up a slow Windows PC. Most businesses see significant improvements without spending a dollar.
A slow computer costs your business money in lost productivity. Before replacing a computer, try these steps — many slow Windows computers can be dramatically improved with software changes and a targeted hardware upgrade.
Start with These Software Fixes
- Disable startup programs: Press Ctrl+Shift+Esc → Startup tab → disable anything you don't need loading at boot
- Run Windows Update: Outdated Windows and drivers cause performance issues and security vulnerabilities
- Check for malware: Run a full scan with Windows Defender or your business antivirus
- Adjust your power plan: Go to Power Options and select High Performance (especially on desktop PCs)
- Free up disk space: Windows needs at least 15% free space on the C: drive to perform well — delete temp files and move data
The Single Best Hardware Upgrade: Add an SSD
If your computer still has a traditional spinning hard drive (HDD), replacing it with a solid state drive (SSD) is the single most impactful upgrade you can make. The difference is dramatic — a computer that takes 3 minutes to boot might boot in 20 seconds after an SSD upgrade. For most businesses, an SSD upgrade costs $80–$150 and adds 2–3 years to a computer's useful life.
Add More RAM If Needed
8GB of RAM is the minimum for comfortable Windows 10/11 use in a business setting. If you regularly have multiple browser tabs, Office documents, and business applications open simultaneously, 16GB makes a noticeable difference. Check your RAM usage in Task Manager — if it consistently runs above 80%, more RAM will help.