Windows 10 · Windows 11 PC

Check a Windows PC for Possible Hardware Problems

Source-checked About 30 minutes

Answer

Back up important files before stress testing. Record the exact symptom, check temperatures and storage warnings, run Windows Memory Diagnostic and the computer maker's built-in diagnostics, then compare the result with a repeatable task. A single crash does not prove failed hardware, but repeated errors, drive warnings, overheating, swelling, or physical damage need professional attention.

Before you continue
  • Back up firstA failing drive can worsen without warning.
  • Record the symptomNote the error, time, app, and what the PC was doing.
  • Stop for physical dangerPower off for smoke, liquid, swelling, or burning smells.
Read Microsoft's performance checks
Guide steps7 steps
  1. Protect your data
  2. Record repeatable evidence
  3. Check Windows reports
  4. Test memory
  5. Run the maker's diagnostics
  6. Compare temperatures safely
  7. Decide the next action
  8. If it still does not work

Protect your data

Back up irreplaceable files to a separate location and verify a few files open correctly.

Record repeatable evidence

Write down the error text, crash time, connected devices, workload, and whether the PC was hot or making unusual noises.

Check Windows reports

Open Windows Security > Device performance & health and Reliability Monitor. Look for recurring storage, hardware, or driver failures at the same times.

Test memory

Search Windows for Windows Memory Diagnostic, choose a restart option, and read the result after Windows returns. Save any reported code.

Run the maker's diagnostics

Use the support app or startup diagnostics supplied by Dell, HP, Lenovo, ASUS, Apple, or the actual computer maker. Run the relevant storage, memory, battery, and fan tests.

Compare temperatures safely

Use the maker's temperature or fan information while repeating the lightest task that causes the problem. Stop if the machine overheats or shuts down.

Decide the next action

If tests pass, update Windows and device drivers and retest. If a test fails or physical damage is present, stop relying on the device and give the code to a qualified repair provider.

If it does not work

  • A failed diagnostic is useful evidence; photograph the code and do not repeatedly stress the component.
  • A battery that is swollen or lifting the case is a safety issue. Turn the device off and arrange service.
  • Memory, storage, power, heat, and drivers can create similar symptoms, so replace parts only after a repeatable test identifies one.
Sources and verification

Checked against official documentation on . Scope: Windows 11 PC.

The written instructions were checked against the current official pages linked below. The older video is kept for reference and may show different menus.

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