The page file is a reserved area on your hard drive or SSD that acts as an extension of your (physical memory). When your system's RAM is fully occupied, Windows moves less frequently used data to the pagefile.sys to free up space for active applications. This process—known as paging —prevents system crashes and allows you to run more programs than your physical RAM would normally support. Why You Might Need to Clear It
The biggest consideration for any user is the . clear page file
In the tab, under the Performance section, click Settings . The page file is a reserved area on
The primary role of clearing the page file is to prevent "cold boot" attacks or unauthorized data recovery. While Windows RAM is volatile and wipes upon power loss, the pagefile.sys resides on your hard drive or SSD. This file stores "overflow" data from your RAM, which can include unencrypted passwords, encryption keys, or sensitive document fragments. Why You Might Need to Clear It The
Open the (search for regedit in the Start menu).
Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management . Set the value of ClearPageFileAtShutdown to . Group Policy (Pro/Enterprise) :