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Set default apps by file type on Windows 10 and Windows 11, change one file from Open With, and reset app associations.

Activate Windows 10 with a digital license or product key, fix common activation errors, and link the license to a Microsoft account.

Add a USB, Wi-Fi, Bluetooth, network, or shared printer to Windows and set it as the default printer.

Reset a forgotten Windows password for Microsoft accounts and local accounts, including reset disks, another administrator account, and recovery options.

Troubleshoot a Windows PC that will not power on, will not reach the desktop, or needs boot repair from recovery media.

Fix the CRITICAL_PROCESS_DIED blue screen by using Safe Mode, rolling back drivers, repairing Windows files, checking updates, memory, and storage.

Fix Disk Cleanup when it will not open, freezes while scanning, or frees little space on Windows 10 or Windows 11.

Fix the DPC_WATCHDOG_VIOLATION blue screen by updating SSD firmware, storage, graphics, chipset drivers, and repairing Windows files.

Fix File Explorer crashes by clearing thumbnail cache, restarting Explorer, disabling context menu add-ons, repairing files, and testing the user profile.

What to do when chkdsk will not start, appears stuck, closes immediately, or reports an error on Windows 10 or Windows 11.