How to change the default browser in Windows 11
To change the default browser of Windows 11, first open the "Settings" app and enter the settings interface through "Apps > Default Apps"; secondly, select the target browser such as Chrome in the "Web Browser" option; then make sure that the browser is also actively set to default; if it still cannot be changed, advanced users can check account permissions or modify settings through command prompts and PowerShell.
Jul 12, 2025 am 12:32 AM
What is the difference between grep, egrep, and fgrep?
The difference between grep, egrep and fgrep is the type of pattern matching they support. 1.grep supports basic regular expressions (BRE), and special characters such as , ?, {, |, (escape; 2.egrep supports extended regular expressions (ERE), without escaping these characters, and supports more powerful functions such as grouping, selection and quantifiers; 3.fgrep does not support regular expressions, and only performs fixed string searches, which are suitable for fast and precise matching. Select according to requirements: BRE needs to be used, egrep or grep-E needs to be used, and literal matches need to be used fgrep or grep-F.
Jul 12, 2025 am 12:25 AM
Wi-Fi not working on Mac
1. Check whether Wi-Fi is turned on and reconnect to the network. 2. Make sure the flight mode is turned off and the time is set correctly. 3. Delete and re-add the Wi-Fi service through "Network Preferences", or refresh the DNS cache using terminal commands. 4. Try restarting your router and Mac. 5. Update the system software and confirm the model support status. 6. Troubleshoot hardware problems, such as signal strength, network replacement test, or using USB wireless network card. Operations one by one for the above steps can usually solve the problem of Wi-Fi connection on your Mac.
Jul 12, 2025 am 12:16 AM
What is Auto HDR and how to use it in Windows 11?
AutoHDRinWindows11enhancesgamevisualswithHDReffectsautomatically.Toenableit,gotoSettings>System>DisplayandtoggleonUseHDR;ensureyourdisplaysupportsHDRanduseacompatiblecable.SupportedgamesincludemostDirectX11and12titles,especiallythosefromtheMicr
Jul 12, 2025 am 12:06 AM
How to check PC specs on Windows
If you want to know the configuration of your computer, you can use the tools provided by Windows system. 1. Use the task manager (Ctrl Shift Esc) to view CPU, memory, disk usage and graphics card model; 2. Use the "Settings → System → About" page to view Windows version, system type and device specifications; 3. Press Win R to enter dxdiag to open the DirectX diagnostic tool to view the graphics card name, graphics memory and driver information; 4. Run systeminfo>C:\systeminfo.txt in the administrator command prompt to generate a complete hardware report, suitable for recording or sharing configuration information.
Jul 12, 2025 am 12:03 AM
Stop Wasting Money on the Wrong PC Gear—These Are the Upgrades That Matter
The fad of RGB has somewhat gotten out of hand. We now have RGB keyboards, RGB headsets, even RGB RAM—and I’m here to say that it’s not all that important. Yes, RGB can be fun, but before you set your focus on getting every single item in your PC
Jul 11, 2025 am 09:02 AM
I've Used Multi-Monitors for Years, Here's How to Configure Them Perfectly
RelatedThe Best Gaming Monitors of 2025You'll want to replay your favorite games after upgrading to a new gaming monitor.Posts Get Your Monitors Aligned the Right Way ----------------------------------------- Once your monitors are up and running—an
Jul 11, 2025 am 03:02 AM
How to customize the Quick Settings panel in Windows 11
QuickSettings for Windows 11 can be expanded by clicking the arrow next to the system icon in the lower right corner of the taskbar, and then clicking the pencil icon at the bottom to enter the custom interface; you can add, remove or sort function buttons, such as Bluetooth, trackpad, flight mode, etc.; some functions may not be available due to device or driver restrictions.
Jul 11, 2025 am 02:48 AM
How to use the Windows key to take a screenshot
Screenshots of Windows systems are not completed by Windows keys alone, but are used in combination with other keys. 1. Use Windows Shift S to call the "Screenshots and Sketches" tool. After selecting the area, the screenshots are automatically copied to the clipboard and notifications pop up; 2. Use Windows PrintScreen to capture full screen and save as picture files, with the path "This computer> Picture> Screenshot"; 3. Use Alt PrintScreen to capture the current activation window and copy to the clipboard, and need to be manually pasted and saved; the PrintScreen keys of some thin and light books may be shared with other keys, and must be used with the Fn key or function lock key.
Jul 11, 2025 am 02:40 AM
Why is my mapped network drive not showing up, and how to fix it?
Mappednetworkdrivesnotshowingupcanbefixedbycheckingifthedriveismapped,ensuringnetworkconnectivity,verifyingpermissions,andrestartingorremappingasneeded.First,confirmthedriveismappedviaFileExplorerorusingnetuseinCommandPrompt,andensurereconnectatsign-
Jul 11, 2025 am 02:37 AM
How to restore Windows from a system image
To restore Windows from a system image, first prepare the external system image, restore the driver or install the USB flash drive, then boot through the USB flash drive and enter "System Image Recovery", and then select the correct image to restore. 1. Prepare the available system image and boot media; 2. Enter the Windows recovery environment through the USB drive; 3. Select the location of the system image; 4. Select the appropriate mirror version; 5. Decide whether to repartition and format the disk; 6. Start recovery and restart the computer. Note: This process clears all new data on the current system drive and may require reinstalling the driver and updating the system after recovery.
Jul 11, 2025 am 02:36 AM
What to do if I forgot my Windows 11 PIN?
If you forget Windows 11PIN, you can reset it through your Microsoft account; 1. Visit the Microsoft login page and click "Can't access account?" to verify your identity and reset the PIN; 2. Try to click "Login Options" on the login interface to select password to log in; 3. Use recovery tools (force restart three times to enter recovery mode, use startup repair or system restore); ensure that Microsoft account information is updated, Windows Hello, and save the BitLocker recovery key can prevent future problems.
Jul 11, 2025 am 02:35 AM
How to fix touchpad not working in Windows?
The trackpad does not work on Windows is mostly caused by driver, setup or system problems. The troubleshooting steps are as follows: 1. Check whether you accidentally touch the touchpad to close the trackpad, try to restore it using the Fn function key; 2. Enter the settings to confirm the trackpad status; 3. Uninstall and reinstall the trackpad driver through the device manager; 4. Check the running status of the HumanInterfaceDeviceAccess service; 5. Test the external mouse to troubleshoot hardware failures. Troubleshooting in this order can solve most problems.
Jul 11, 2025 am 02:34 AM
How to enable or disable Windows Defender in Windows 11?
WindowsDefender, which comes with Windows 11, can be turned off or enabled in a variety of ways. Use the Settings app to temporarily turn off real-time protection; professional users can permanently disable Defender through the Group Policy Editor (Pro, Enterprise, or Education only); home users can turn it off through registry modification; Defender is usually automatically disabled when installing third-party antivirus software, and the service needs to be manually restored or reset after uninstallation. The system settings should be backed up before operation to avoid security risks.
Jul 11, 2025 am 02:33 AM
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