Can a website test every computer hardware component?

No. A browser can test browser-visible capabilities and real input/output behavior, but it cannot directly read temperatures, SMART attributes, BIOS logs, motherboard voltages, exact driver versions or many protected hardware registers.

Is this a real PC diagnostic test?

It is a real browser-based functional diagnostic. It can confirm successful graphics rendering, temporary storage writes, media capture, input events, controller data and other browser-accessible behavior. It is not a replacement for firmware or operating-system diagnostics.

Can this test detect a bad CPU?

It can reveal severe browser slowdown, scheduling delay or throttling symptoms, but it cannot certify that a processor is physically healthy. Persistent crashes, machine-check errors, overheating or failures in manufacturer diagnostics require deeper testing.

Can the memory test find faulty RAM?

No. The bounded JavaScript memory test verifies browser allocation and selected written values. Physical RAM testing requires an operating-system or bootable memory diagnostic that can scan far more memory and inspect error patterns.

Can the tool test an SSD or hard drive?

It can verify that the browser can write and read temporary IndexedDB data and report browser storage quota. It cannot read SSD or hard-drive SMART health data. Use the operating system or drive manufacturer utility for SMART, temperature and media-error checks.

Why does WebGPU show unsupported?

WebGPU has limited browser and platform availability and normally requires HTTPS. Unsupported status may simply mean the browser, operating system, graphics stack or policy does not expose WebGPU. WebGL can still work normally.

What does a WebGL failure mean?

Common causes include disabled hardware acceleration, an outdated graphics driver, a browser blocklist, remote-desktop restrictions or a damaged browser profile. Repeated failures with artifacts or system crashes can justify deeper GPU testing.

Can the page identify my exact graphics card?

Sometimes WebGL or WebGPU exposes limited adapter information, but browsers may intentionally mask or generalize GPU details for privacy and security. Use the operating system or vendor control panel for authoritative hardware identification.

Why must camera and microphone tests ask permission?

Browsers protect camera and microphone access. The test starts only after a direct user action and permission grant. Denied permission is not evidence that the hardware is broken.

Does CorrectionCopy upload my camera or microphone data?

No media is intentionally uploaded by this page. Camera preview, microphone analysis and speaker tones run locally in the page. Firebase receives only anonymous aggregate usage and rating values.

Why is battery information unavailable?

Many browsers do not expose the Battery Status API because of privacy, fingerprinting or platform decisions. An unavailable API does not mean the battery is missing or defective.

Can the test diagnose a driver problem?

It can suggest driver or configuration causes when an API, context or device fails, but it cannot read the installed driver version. Confirm with Device Manager, System Information, official vendor software or operating-system logs.

When should I replace a hardware component or chip?

Replacement should be a final step after repeating the failure in another browser, checking permissions and cables, updating official drivers, running operating-system and manufacturer diagnostics, and obtaining professional confirmation when the device is valuable or soldered.

Can I test USB devices directly?

Supporting Chromium-based browsers may offer WebUSB, WebHID or Web Serial device choosers over HTTPS. The page only requests user selection and reports basic identity information; it does not send commands to the device.

Why does an external-device button not work in Safari or Firefox?

WebUSB, WebHID and Web Serial have limited availability and are not implemented equally across browsers. Use a supported browser and HTTPS, or use the manufacturer application.

Can I test a laptop touchscreen?

Yes. The touch panel records pointer contacts and maximum simultaneous touches. For full dead-zone coverage, use the dedicated CorrectionCopy Touch Screen Test.

Can I test a game controller?

Yes. Connect the controller, press a button so the browser recognizes it, then start monitoring. The test displays buttons and axes exposed by the Gamepad API.

What should I do if several unrelated tests fail?

Repeat the scan in another updated browser. If many failures remain, check security software, operating-system corruption, chipset drivers, power stability, memory and storage using pre-boot or manufacturer diagnostics.

Does a low online benchmark prove old or damaged hardware?

No. Browser benchmarks vary with background applications, power mode, heat, browser version, extensions and device architecture. Compare repeated results under similar conditions rather than using one score as proof.

Can this tool guarantee my computer is healthy?

No single browser or native utility can guarantee complete hardware health. A good result means the tested browser-visible functions behaved normally during the session. Continue backups and investigate recurring symptoms.

Computer Hardware Test | CorrectionCopy

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How to Run a Computer Hardware Test Online

Use automated checks first, then verify the components that require sound, video, touch, physical input or browser permission.

1

Scan browser capabilities

Identify accessible processor hints, graphics APIs, media APIs, storage, network, battery, sensors and modern browser features.

2

Run automated diagnostics

Test CPU responsiveness, bounded memory allocation, WebGL/WebGPU, refresh timing, browser storage and network response.

3

Complete guided hardware checks

Test the camera, microphone, speakers, keyboard, mouse, touchscreen, controller, sensors and external-device permission flow.

Complete PC, Laptop and Device Test Modules

A modular hardware checker for current desktop, laptop, tablet and mobile architectures.

CPU

CPU and browser responsiveness

Measures bounded arithmetic throughput and main-thread scheduling delay to reveal severe load, throttling or browser-performance problems without pretending to certify processor health.

RAM

Memory allocation and verification

Creates a safety-limited typed-array workload, checks written values and reports allocation failure separately from physical RAM faults.

GPU

WebGL and WebGPU diagnostics

Creates graphics contexts, compiles shaders, renders pixels, reads capability limits and performs a small WebGPU compute check where supported.

I/O

Camera, microphone and speaker tests

Verifies real media capture, live microphone levels and stereo sound output with explicit permission and user confirmation.

USB

Keyboard, mouse, touch and external devices

Tests input events, gamepads, multi-touch and permission-based WebUSB, WebHID, Web Serial and Bluetooth device selection.

NET

Storage, battery and network checks

Reports browser storage quota, verifies a temporary IndexedDB write, reads battery status when exposed and measures same-origin response timing.

What this online computer diagnostic tool can and cannot prove

This browser-based PC diagnostic test is designed for fast troubleshooting before installing vendor software or opening a computer. It can prove that a browser successfully created a GPU context, wrote temporary browser storage, received keyboard or mouse input, captured a camera stream, detected microphone activity, played stereo sound or received controller events. These are useful functional checks.

It cannot directly inspect motherboard power rails, CPU temperature sensors, GPU hotspot temperatures, physical RAM error logs, NVMe or SATA SMART attributes, fan RPM, BIOS event logs, PCIe link errors, Windows Device Manager status, macOS System Information, Linux kernel messages or manufacturer-specific diagnostic codes. Those checks require operating-system privileges, native software, firmware diagnostics or professional equipment.

How the likely-cause engine works

The recommendation engine uses transparent rules rather than claiming artificial certainty. A camera permission error points first to browser permission, privacy settings or another application using the camera. A WebGL context failure points to disabled hardware acceleration, an outdated graphics driver, browser incompatibility or a GPU problem. A temporary storage write failure points to private browsing restrictions, full storage, quota policy or file-system problems. Multiple failures across browsers and operating-system diagnostics increase the reason to suspect hardware.

When driver repair is more likely than component replacement

Driver or software causes are more likely when the device appears in firmware or the operating system, works in another browser or account, failed after an update, or returns after reinstalling the driver. Hardware causes become more plausible when the component fails across multiple browsers and operating systems, disappears from firmware, disconnects under movement, produces visual artifacts, makes abnormal electrical or mechanical noise, overheats, or fails a manufacturer diagnostic.

Safe escalation order

Restart the browser and computer, reconnect cables and remove unnecessary hubs.
Check operating-system privacy permissions, selected input/output devices and browser site permissions.
Update the browser, operating system, chipset driver, graphics driver, audio driver and device firmware from official sources.
Repeat the test in another browser, user account and safe or clean-boot environment.
Run the computer manufacturer’s firmware or pre-boot diagnostics and the operating system’s memory, disk and device tools.
Back up important data before storage, power or motherboard troubleshooting.
Use professional hardware inspection before replacing a motherboard chip, controller, GPU, RAM module, SSD, camera module or other part.

Hardware Test Results and Possible Causes

Use repeated evidence—not one browser result—to separate configuration, driver and physical hardware problems.

Test symptom	Common software or driver causes	Possible hardware causes	Recommended next check
Camera permission denied	Blocked site permission, privacy setting, another app using camera	Usually not proven by this symptom alone	Check browser and OS camera permissions; test the system camera app
Camera opens but image is black	Wrong camera selected, privacy shutter software, virtual-camera conflict	Closed physical shutter, loose cable, failed sensor/module	Open physical shutter, select another camera, test manufacturer diagnostics
No microphone activity	Muted input, wrong source, denied permission, audio driver	Damaged jack, microphone cable or microphone module	Check OS input meter and another microphone
WebGL or WebGPU failure	Hardware acceleration disabled, old browser, blocked driver	GPU instability or system memory problem	Enable acceleration, update official GPU driver, test another browser
Storage write fails	Private mode, browser quota, restrictive policy, full profile	Full or failing storage device is possible but not proven	Check free disk space and SMART data with OS/vendor tools
Keyboard or mouse missing inputs	Accessibility filter, remapping utility, USB driver, wireless interference	Switch wear, cable damage, battery, receiver or USB port	Try another port/device and test before the operating system loads
Battery information unavailable	Browser does not expose Battery Status API	Not evidence of battery failure	Use the operating system battery report or manufacturer tool
Several unrelated tests fail	Restricted browser, broken profile, security software, OS corruption	Power, motherboard, memory or storage instability	Repeat in another browser, then run pre-boot diagnostics

Complete Computer Diagnostic Test for PC and Laptop Components

Use one browser-based PC diagnostic tool to check the computer functions people most often search for when a laptop, desktop, monitor, peripheral or connected device is not working correctly.

CPU, processor and RAM memory test

Run a CPU responsiveness test, browser performance check and bounded RAM memory allocation test for severe slowdown, thermal-throttling clues, frozen tabs, memory pressure and unstable browser workloads.

GPU, graphics card and monitor test

Check WebGL graphics rendering, WebGPU compute support, refresh-rate timing, screen resolution, color depth, gradients, flicker clues, dead pixels, stuck pixels and display artifacts.

SSD storage, network and battery test

Verify temporary browser storage read/write, inspect quota, test same-origin network response, view Wi-Fi or connection hints and read laptop battery charge information where the browser permits it.

Webcam, microphone and speaker test

Open a camera preview, inspect delivered webcam resolution, measure live microphone activity and test left, right and centered speaker or headphone channels.

Full keyboard key and mouse button test

Use the visual keyboard mapper to test letters, numbers, function keys, modifiers, arrows and keypad codes, then test mouse clicks, double-clicks, movement and the scroll wheel in focused pop-up diagnostics.

Touchscreen, gamepad and controller test

Check touch contacts, multi-touch capability, game-controller buttons, analog sticks, axes and triggers through browser input APIs on compatible devices.

USB, HID, Serial and Bluetooth test

Check whether the browser supports permission-based WebUSB, WebHID, Web Serial and Web Bluetooth device selection, while clearly separating API compatibility from hardware failure.

Driver issue or hardware failure guidance

Review likely causes for permission errors, disabled acceleration, outdated drivers, wrong devices, cables, ports, batteries, wireless interference, damaged switches, loose modules and possible component failure.

Computer Parts, Chip Names, Device Brands and Hardware Model Detection

The advanced parts inventory collects every hardware identity that a modern browser is permitted to expose, while clearly marking protected component details that require operating-system or manufacturer software.

CPU architecture and processor information

The diagnostic can report logical processor count, browser-exposed architecture, bitness, platform model and workload behavior. Exact Intel, AMD, Apple or Qualcomm CPU model names, clock speed, temperature, cache size and motherboard socket are normally protected from webpages.

GPU brand, renderer and graphics-chip details

WebGL may reveal a graphics vendor and renderer string, while WebGPU may expose adapter vendor, architecture, device identifier and description. Privacy settings can mask or generalize the exact NVIDIA, AMD, Intel, Apple or mobile GPU identity.

RAM size, memory module and storage information

The page can show an approximate device-memory hint, tested buffer size and browser storage quota. Exact RAM brand, DDR generation, DIMM capacity, SSD model, NVMe controller, drive serial number, SMART health and NAND-chip identity require trusted system diagnostics.

Camera, microphone, speaker and peripheral names

After permission is granted, the browser may reveal camera, microphone and audio-output labels such as built-in, USB or Bluetooth device names. Selected USB, HID, Serial, Bluetooth and Gamepad devices can expose product names or vendor/product identifiers.

Monitor, laptop display and multi-screen identity

Resolution, color depth, device-pixel ratio, orientation, refresh estimate and extended-screen status are always checked. Supporting browsers can optionally request screen labels and internal/external screen status for multi-monitor diagnostics.

Motherboard, chipset, BIOS, fan and thermal limits

A webpage cannot safely read motherboard model, chipset stepping, BIOS version, fan RPM, CPU/GPU temperature, voltage rails or embedded-controller logs. The report explains when to continue with BIOS, Device Manager, system-information, SMART, memory and manufacturer diagnostic tools.

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Computer Hardware Test FAQ

Answers about online PC diagnostics, browser limitations, drivers and hardware repair.

Diagnostic control center

Likely causes and recommended next steps

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