Knowledge base for software setup, errors, and daily tool work.

Fix Windows 10 Product Key Not Working After Hardware Change

You replaced a major component—often the motherboard—and now Windows 10 says your product key isn...

Check Which Application Is Using Remote Desktop Port (3389)

When you try to start Remote Desktop and get an error that the port is already in use, something ...

How to Repair Corrupted Windows System Files Using SFC and DISM

You might be seeing blue screens, application crashes, or strange error messages. Corrupted syste...

Fix VirtualBox Kernel Driver Not Installed on Windows 10

Fix Command Prompt Dependency Conflict Error Code

When you see a 'dependency conflict error code' in Command Prompt, it usually means a required co...

Fix Windows Activation Update Error 0x80070643

If you see error 0x80070643 during a Windows activation update, the update process has been inter...