It is not recommended to delete registry keys in order to improve performance. Registry keys are an important part of Windows, and deleting them can cause serious issues, including rendering the computer unusable. It is best to use other methods to improve performance, such as regularly running a disk cleanup and defragmenting your hard drive.
However, if you must delete registry keys, there are some that can be safely removed. These include:
• HKEY_USERS\.DEFAULT\Control Panel\Desktop\FontSmoothingGamma: This key can be safely deleted to improve text rendering and font smoothing.
• HKEY_USERS\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\RunOnce: This key stores applications that need to run only once when the computer starts up. If the programs are no longer needed, they can be deleted from this key.
• HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\StartupApproved\Run: This key stores programs that run when the computer starts up. Removing unnecessary applications from this key can reduce the time it takes for the computer to boot up.
• HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders\ Start Menu: This key stores items that appear on the Start menu. Deleting items from this key can reduce the clutter on the Start menu.
• HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows\AppInit_DLLs: This key stores applications that run when the computer starts up. Removing unneeded applications from this key can reduce the time it takes for the computer to boot up.
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager\Memory Management\PrefetchParameters\EnablePrefetcher: This key stores whether Windows prefetches data to improve system performance. Setting this key to “0” can increase performance.
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters: This key stores parameters used by the TCP/IP protocol. Changing certain values in this key can improve network performance.
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows: This key stores entries for the Windows graphical user interface. Deleting unnecessary entries from this key can improve system performance.
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Memory Management\IoPageLockLimit: This key controls the size of memory that Windows will allocate to disk caching. Setting this key to “0” can improve system performance.
• HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Perflib\009: This key stores performance counters that can be used to monitor the system. Disabling certain performance counters in this key can improve system performance.
In conclusion, deleting registry keys should be done with caution, as they are a critical part of the Windows operating system. Deleting the wrong registry keys can cause serious issues and render the computer unusable. It is advised to use other methods to improve system performance instead. However, if you must delete registry keys, there are some that can safely be removed.