Restart the computer
Check available free disk space (keep at least 10–20% free)
Uninstall unused programs
Remove unnecessary browser extensions
Disable startup programs (Task Manager → Startup)
Update Windows and installed software
Update device drivers (especially graphics, chipset, storage)
Run Windows Security scan (Full scan)
Run disk cleanup (Storage settings → Temporary files)
Clear browser cache and site data
Empty Recycle Bin
Check for malware using a reputable tool (and run a full scan)
Repair corrupted system files (Command Prompt as admin: `sfc /scannow`)
Check disk health (Command Prompt as admin: `chkdsk`)
Defragment HDD drives (optimize drives); skip for SSD
If using an HDD, consider upgrading to an SSD
Increase RAM if the system is frequently maxing out (Task Manager → Performance)
Reduce visual effects (System settings → Performance)
Turn off unnecessary background apps
Set power mode to Balanced (or Performance)
Use a wired connection instead of Wi-Fi if network speed is the issue
Test with a different user account to isolate profile issues
Check temperature and dust (clean fans/vents)
Replace failing storage if SMART/health checks show errors