Laptop acting strange? Run a full hardware check

Your laptop freezes, drops its connection, or behaves differently from one day to the next. When several things seem wrong, it can be hard to tell whether the cause is a single setting, a failing part, or a temporary software problem.

Test Everything runs browser-based checks step by step and gives you a report. It can help you find which parts need a closer look, though it cannot diagnose every component inside a laptop.

Run a full laptop check

1. Open Test Everything. Save your work first, close demanding apps, and keep the laptop on a firm surface with its vents clear.
2. Follow the tests one at a time. You may need to press keys, move the mouse, check colors on the screen, or make a sound to test the microphone and speakers.
3. Allow camera or microphone access if you want to test those devices. Your browser asks before a site can use either one. You can skip a test if you do not want to grant access or do not have that hardware.
4. When the checks finish, review the report. Note the name of each test that failed or could not run, along with any symptoms you noticed at the same time.

For a problem that comes and goes, repeat the relevant check when the laptop is behaving strangely. A failure that happens repeatedly is more useful to investigate than a single unusual result.

What the results mean

One test fails repeatedly

A repeated failure points to a specific device or function. For example, if several keys do not register in the keyboard check, test an external keyboard too. If the built-in screen has a visible mark, compare it with the display test and, if available, an external monitor.

Everything passes, but the laptop still acts strangely

A pass means the tested function worked during that check. It does not rule out a fault that appears only after the laptop warms up, when the battery is low, or while a particular app is running. Note when the problem occurs and run the related test at that time.

A test is unavailable or cannot detect a device

Browsers have limited access to hardware. A camera or microphone can be blocked by a permission setting, and battery details appear only when the browser reports a battery. An unavailable browser test is not proof that the part is broken.

The laptop is slow or gets hot during testing

Some performance checks put a temporary load on the processor, graphics hardware, storage, or network. A brief slowdown during a demanding test is not the same as a failure. If the laptop becomes unusually hot, smells burnt, shuts down, or makes a new grinding sound, stop the check and let it cool.

How to narrow down the problem

1. Restart the laptop. A restart clears temporary problems caused by a stuck app or system process. Run the failed check again before changing several settings at once.
2. Reconnect accessories. Unplug USB devices and docks, then connect them one at a time. For Bluetooth devices, check that they are charged and connected before testing them.
3. Check permissions and sound settings. On Windows 11, open Settings › Privacy & security › Camera or Settings › Privacy & security › Microphone and check access for desktop apps. On macOS, open System Settings › Privacy & Security › Camera or System Settings › Privacy & Security › Microphone. For sound, check Settings › System › Sound on Windows or System Settings › Sound on macOS, and select the intended input or output device.
4. Check for system updates. On Windows 11, open Settings › Windows Update. On macOS, open System Settings › General › Software Update. Install available updates, restart, and retest.
5. Compare with another app or device. If a camera, microphone, speaker, or accessory works in one app but not another, check that app's device selection and permissions. If the same hardware fails on another computer too, the issue is less likely to be a laptop setting.
6. Get help for a recurring hardware failure. Write down the failed test, the symptoms, and when they happen. If the laptop is under warranty, contact the manufacturer before opening it or paying for a repair.

When it may be a hardware problem

A part is more likely to be faulty when the same symptom appears across multiple apps or operating systems, or when an external device works but the built-in part does not. Physical damage, a loose charging port, repeated unexpected shutdowns, or a screen mark that stays visible are also reasons to arrange a repair.

Heat-related slowdowns can have several causes, including blocked vents or a cooling problem. If the laptop becomes hot and then slows down repeatedly, see why a laptop gets slow when it gets hot. Do not keep running load tests on a laptop that is overheating or shutting itself down.

What a browser check can and cannot test

Test Everything checks functions that the browser can reach, such as keys, screen output, camera, microphone, speakers, network behavior, and some performance or storage behavior. It cannot inspect every internal component, read every system log, or prove that a driver or motherboard is healthy.

Most checks run on your device. Speed tests exchange test data with the server to measure the connection. Use the report to decide what to investigate next, rather than treating it as a complete repair diagnosis.