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.

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 space occupied by the C drive restore point through the System Protection tab in the system properties. Secondly, use the PowerShell command vssadminlistshadowstorage to obtain the total volume shadow copy occupation. Finally, check the SystemRestore task frequency through the Task Scheduler to evaluate the storage impact.

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

Turn on incognito browsing in UC Browser to protect privacy. Select "Incognito Browsing" through the tab icon on the main interface or slide the sidebar to enter "Incognito Mode". You can also create a desktop shortcut in the settings. After startup, a prompt will be displayed at the top of the page and the operation will leave no local traces.

1. You can view and adjust Windows 8 background services by running services.msc, Task Manager, Computer Management and Command Prompt. The operations are applicable to quick access, resource monitoring, comprehensive configuration and batch query scenarios.

You can cast mobile videos to your computer through QQ browser cross-screen traversal, Miracast mirroring or third-party software. First, make sure the device is connected to the same WiFi, use the same QQ account to log in to the QQ browser on both the phone and the computer, click the "Cross-Screen Travel" button on the video playback page and select the target computer to complete the screencasting; if the computer supports Miracast, you can click "Screen Mirroring" in the phone control center to select the computer name to connect; you can also scan the QR code through third-party software such as ApowerMirror to achieve high-definition transmission.

First clearing cache and history can solve the problem of slow loading or abnormal display of UC Browser. Specific operations include: clearing cache, browsing history and cookies through UC Browser settings menu; clearing cache separately in "Downloads and Cache" to retain login status; or force clearing UC Browser's cache and data through "Application Management" of the mobile phone system to free up storage space and improve browsing performance.