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Samsung PC Diagnostics can check listed components on supported Galaxy Book4, Book5 and Book6 models, and Samsung documents ways to launch its UEFI diagnostics even if Windows will not start. Run a full check for a broad first look, or test an individual component that matches your symptom. A clean result does not rule out every possible problem.
Check whether your Galaxy Book supports PC Diagnostics
Samsung documents PC Diagnostics for Galaxy Book4, Galaxy Book5 and Galaxy Book6 on its India support page, and notes that model availability can change. The instructions below come from that regional page, so confirm support and steps for your exact model on Samsung’s support site rather than assuming the utility is available on every Samsung laptop or in every region. Samsung: How to use PC Diagnostics on your Samsung Galaxy Book6.
For US support, Samsung’s laptop hub offers model-specific manuals, drivers, firmware, software, warranty information and repair requests. Search using your laptop’s model code to find relevant downloads and instructions. Samsung Windows Laptops Support.
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- Open PC Diagnostics. Search for PC Diagnostics from the taskbar and launch the app. If it is installed, you may also be able to open it through Device Care. Samsung says installation for Galaxy Book4 and Book5 may be available through Microsoft Store.
- Choose the scope. Select Test all for the set of checks available on your model, or choose an individual component test if your symptom points to one item. A full check is a practical broad first step; a component test is more focused, not inherently more accurate.
- Complete any requested interactions. Depending on the test, you may need to press touchpad or touchscreen areas, type indicated keyboard keys, listen to left and right speakers, or record and play back microphone audio. Bluetooth and Wi-Fi checks search for nearby devices or networks.
The app’s test list varies by model. Samsung identifies up to 17 possible checks: mainboard, cooling fan, motion detection sensor, light sensor, storage, touchpad, touchscreen, keyboard, speaker, microphone, camera, AC adapter, battery, fingerprint sensor, Bluetooth, Wi-Fi and cellular. Not every model will include every item.
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Start PC UEFI Diagnostics if Windows will not boot
Samsung documents two startup methods for supported systems. Both open PC UEFI Diagnostics before Windows loads; Samsung does not state that one route tests more accurately than the other. Use the BIOS menu if you prefer a visible menu path, or use F5 for the direct route.
BIOS menu route
- Power on the laptop and repeatedly press and release F2 before the Samsung logo appears.
- In BIOS, select Advanced > PC UEFI Diagnostics.
Direct startup route
- Power on the laptop and repeatedly press and release F5 before the Samsung logo appears.
- PC UEFI Diagnostics should open.
Keyboard layouts and startup behavior can vary. If a key does not work, check the instructions for your specific model on Samsung’s support site.
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Understand the results and their limits
Samsung indicates that completed tests that pass receive a blue check mark. A problem item appears orange with an exclamation mark, and the app offers Test again. If you stop diagnosis before the tests finish, it offers options to continue or restart them. For certain devices disabled in Device Manager, an Enable action may appear during diagnosis.
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The app’s Information tab can show the model, BIOS version, serial number, CPU, memory, graphics driver, storage, audio, network and app version. This information can help you identify the configuration when looking for model-specific support.
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A pass is not proof that the whole laptop is healthy. Samsung explicitly cautions that “PC Diagnostics may not diagnose or resolve some PC problems.” The utility checks listed components; a symptom could instead be software-related, intermittent, model-specific, or outside the checks available on your device. Treat results as one clue, alongside what the laptop is doing.
Troubleshoot a Samsung laptop that runs slowly or freezes
Samsung’s US guidance treats slowdowns as a broad symptom and focuses first on whether hardware is the cause. Work through these steps before deciding that a component has failed. Samsung: Samsung PC runs slowly or freezes.
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- Check resource use. Press Ctrl + Alt + Delete and open Task Manager. Look for processes using a large share of CPU or memory. End a resource-heavy task only if you are sure it is not doing work you need.
- Update Windows, Samsung software and apps. Install current Windows updates and Samsung drivers or support software. Check app publishers for updates to the applications you use.
- Check available storage. Low free space can make programs difficult to run. Review storage and remove or move files only when you know you no longer need them.
- Restart the laptop. A restart can clear a temporary condition; check whether the slowdown returns.
- Consider a factory restore only after backing up your data. Samsung says a complete restore removes software that may interfere with normal operation. Back up files first to a destination you can access after the reset.
- Request service if the issue remains. Samsung recommends service when slowdowns or freezes persist after a factory reset.
Choose the right Samsung support path
If the utility reports a problem, or your symptom persists despite troubleshooting, use Samsung’s support hub to find model-specific help. Its categories include Audio & Sound, Connectivity, Display or Screen, Power & Battery, Samsung Account & Registration, and Software & Apps. The hub also provides manuals, downloads, warranty information, repair requests and contact options: Samsung Windows Laptops Support.
Quick Recap
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