Check if mouse and keyboard work on another computer. Try solutions one at a time, starting from simplest
Windows 7 was released in October 2009 as Microsoft's near-perfect successor. Despite being over a decade old, it still faces startup issues and compatibility problems. Windows Recovery tools include System Repair and System Restore options
Missing or corrupted BCD file is the most common cause. Bad or outdated drivers can trigger the error. System file corruption may occur during boot sector writing
Open Settings through Start menu or right-click Start. Navigate to System > About. Look for "System type" to the right of "64-bit" or "32-bit"
Startup programs can be modified through the Startup folder in the Start menu. MSConfig tool enables or disables startup programs for all users. Program settings can be adjusted directly in the program's interface
Microsoft stopped supporting Windows 7 as of January 14, 2020. It's recommended to upgrade to newer Windows versions