Change Ram Size In Regedit Windows 10 May 2026

Inside the recovery environment, he loaded the "hive" of his broken Windows installation from C:\Windows\System32\config\SYSTEM . He found the offending keys. PhysicalMemorySize . SecondLevelDataCache . With a single press of the Delete key, he unmade his lie.

The Windows logo appeared. The circle of dots spun, happily, ignorantly. The desktop loaded. Task Manager reported the same old 4 GB of RAM. Chrome still stuttered. The spreadsheet still crawled.

He ordered new RAM sticks the next morning. And this time, he backed up the registry first. change ram size in regedit windows 10

But Leo smiled. He had ventured into the core of the machine, told a lie so convincing the system almost believed it, and then lived to tell the tale. He had learned the real truth:

He clicked OK. The key turned bold, as if the system itself was nervous. Inside the recovery environment, he loaded the "hive"

Leo’s computer was now a philosophical zombie. It was powered on, but not there . Windows was trying to allocate 16 GB of memory to processes in a universe that only had 4 GB of physical atoms. The registry was a map, and he had drawn a castle on a swamp. The operating system drove straight into the swamp.

"Just change a few numbers," the post said. "HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0". Then add a DWORD called "SecondLevelDataCache". Then, for RAM, you add another key: "PhysicalMemorySize". SecondLevelDataCache

The post claimed you could trick Windows into thinking it had more RAM than it actually did. All you had to do was dive into the forbidden labyrinth of the .