Restart the PC, reproduce the slowdown and use Task Manager to see whether CPU, memory or disk is saturated. Check free space and Windows Update before changing hardware.
Use normal shutdown procedures, keep hardware dry and stop if you see damage, overheating, burning smells or any electrical risk.
Checks to perform in the right order
Start with simple, reversible checks. If one step fixes the issue, stop there instead of changing unrelated settings.
Confirm the exact symptom
Reproduce the slowdown after a normal restart and note whether it starts immediately or only after opening a specific program.
Start with the simplest reversible check
Use Task Manager to compare CPU, memory and disk activity while the problem is actually happening; do not terminate services you do not recognize.
Change one variable at a time
Check free space and install official Windows and hardware-vendor updates before using registry cleaners or third-party driver tools.
Cross-test before resetting anything
Write down what changes and what stays the same. A controlled comparison is more useful than several resets performed together.
Escalate with useful evidence
If the problem survives the safe checks, record the model, software version, warning shown and tests already performed before contacting support.
How to narrow down the cause
- A change after one controlled test is a useful clue; keep the other variables unchanged.
- If a second compatible device works in the same setup, focus on the first device rather than replacing everything.
- Stop if there is heat, liquid, physical damage, burning smell or electrical risk.
Official sources used
Procedures can vary by model, firmware or hardware revision. When your device differs, use the official manufacturer documentation for that exact model.