Test your laptop in 5 minutes

1. Press the Windows key, type “Command Prompt” and open it.
2. Run this command:
   powercfg /batteryreportCopy
3. It shows where it saved battery-report.html. Open that file in your browser.
4. In “Installed batteries”, compare “Design capacity” with “Full charge capacity”.

Good result

Full charge capacity is 70% or more of the design capacity.

Needs attention

Below about 70% means the battery is worn and will not last long on a charge.

1. Download CrystalDiskInfo from its official site and run it.
2. Look at “Health Status” for each drive.
3. Quick built-in check: in Command Prompt, run:
   wmic diskdrive get model,statusCopy

The built-in check is basic only. CrystalDiskInfo gives a clearer picture.

Good result

CrystalDiskInfo shows “Good”, and the built-in check shows “OK”.

Needs attention

“Caution” or “Bad” means: back up your data now and get the drive checked.

1. Save your work and close all apps first.
2. Press the Windows key and type “Windows Memory Diagnostic”.
3. Choose “Restart now and check for problems”. The test takes about 10–20 minutes.

Good result

After the restart, Windows reports that no memory errors were found.

Needs attention

Any memory error means a RAM stick may be faulty and should be checked.

1. Press Windows key + R, type this and press Enter:
   dxdiagCopy
2. The “Display” tab shows your graphics chip and its driver.

Good result

No problems are listed in the “Notes” box.

Needs attention

Errors in the “Notes” box are worth showing to a technician.

1. Open System Settings and choose Battery.
2. Look at Battery Health (click the info button next to it for details).

Good result

Battery health shows “Normal”.

Needs attention

“Service Recommended” means the battery should be checked or replaced.

1. Open Disk Utility (search for it with Spotlight: ⌘ + Space).
2. Select your main drive and click First Aid, then Run.

Good result

First Aid finishes and says the drive appears to be OK.

Needs attention

If First Aid reports errors it cannot repair, back up your data now and get the drive checked.

1. Save your work and shut down the Mac.
2. Intel Macs: turn on and hold the D key. Apple silicon Macs: press and hold the power button until you see startup options.
3. Follow Apple's on-screen steps. They can change between macOS versions, so check Apple Support.

Good result

Apple Diagnostics reports no issues found.

Needs attention

Any reference code it shows points to a part that needs checking. Note the code down.

1. A steady light usually means charging. Blinking often means low battery or a charging fault.
2. Light meanings differ by brand, so check your laptop's manual.
3. Try another wall socket and check the cable for cuts or bends.

Good result

The light is steady and the battery level goes up while plugged in.

Needs attention

No light, blinking, or the level does not go up. Never use a damaged charger.

1. Use the laptop normally for 10–15 minutes on a hard, flat surface.
2. Feel the base and listen to the fan while nothing heavy is running.

Good result

Warm under load, quiet when idle, no sudden shutdowns.

Needs attention

A very hot base, a loud fan when idle or sudden shutdowns usually mean dust or a cooling fault.