A slow PC can be limited by startup load, storage, memory, heat, updates, malware, or a failing drive. Measure first, then change one thing at a time.
Step-by-step checks
1. Restart and reproduce
Restart normally and open only the app that feels slow. This separates a persistent problem from accumulated background work.
2. Check Task Manager
Use Task Manager to observe CPU, Memory, Disk, and Network while the slowdown occurs. A short spike is normal; sustained saturation points to the constrained resource.
3. Check free storage
Low free space can interfere with updates and temporary files. Remove known unneeded files using Windows storage tools, not unknown system folders.
4. Review startup apps
Disable only nonessential apps you recognize. Do not disable security, accessibility, hardware, or backup components simply because they use resources.
5. Update and scan
Complete Windows and manufacturer updates, then run the built-in security scan. Recheck performance before installing optimizer or registry-cleaner software.
When to stop
Back up important files before recovery, reset, storage replacement, or other changes that could affect data.
What to tell an expert
Share the device model, operating system, exact symptom or error, when it began, what changed beforehand, and which checks you completed. Do not send passwords, one-time codes, encryption recovery keys, or unnecessary personal files.
Official reference
This Supportia guide was prepared with current official guidance as a factual baseline. Interface names can still vary by device and version. Open the official reference.
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