There are three ways to change the default PDF opening method to your desired application: through File Explorer, System Settings, or Control Panel. First, you can right-click on any PDF file and select "Open with" and check "Always use this app"; secondly, enter the "Default Application" setting through [Win I] and specify a program for .pdf; you can also manually associate it through the "Default Program" function of the control panel. If it is still changed after setting it, you need to check whether the security software has reset the association, and make sure that the PDF reader's own settings have been set to default to avoid conflicts between multiple PDF software and lead to unstable association.

First, check the microphone connection and settings to ensure that the device is recognized by the system; secondly, enable microphone access in the privacy settings and allow the application to use it; then confirm that the language and regional settings are correct, and configure the matching speech recognition language; then run the audio troubleshooting tool to automatically fix the problem; finally update or reinstall the audio driver to troubleshoot the driver failure.

Torebootacomputer,restartthesystemtorefreshitsstateandreloadtheoperatingsystem.Saveworkfirst,thenusetheOSmenuorpowerbutton.Rebootingappliesupdates,fixesglitches,andresolvesslowdowns.Asoftrebootclosesprocessessafely;ahardrebootforcesshutdownbyholdingt

The right-click menu is stuck due to registry redundancy or software conflicts. It is necessary to clean up the ContextMenuHandlers items, delete non-New sub-items, use the search function to check the Directory path and delete redundant items, uninstall third-party software such as 360 or NVIDIA, and update the graphics card Bluetooth driver to solve the problem.

Folders that cannot be renamed may be due to being occupied, insufficient permissions, or system settings issues; 02. You can end the occupying process through Task Manager and Resource Monitor; 03. Run File Explorer as an administrator to increase permissions; 04. Reset folder options to fix interface failures; 05. Check and repair the user folder path in the registry; 06. Use tools such as IObitUnlocker to force unlock.

Windows 11 can enable the taskbar clock to display seconds through settings, registry, command line, or third-party tools. 1. Turn it on in settings: Go to Personalization → Taskbar → Taskbar Behavior and turn on "Show seconds in system tray clock"; 2. Registry modification: Create a new DWORD value ShowSecondsInSystemClock under HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced and set it to 1; 3. Command line execution: Run PowerShell as an administrator and enter regaddHKCU\Softw

The DPC_WATCHDOG_VIOLATION error is usually caused by driver, hardware or firmware problems. It can be troubleshooted by disconnecting external devices, updating SATA/AHCI and chipset drivers, uninstalling new software, disabling independent graphics to test the core display, and restoring BIOS default settings.

First, check whether the function is normal by running compmgmt.msc. If abnormal, repair the system files (sfc/scannow and DISM), correct the registry call path and configure permissions. Finally, create a desktop shortcut as an alternative.