Change Ram Size In Regedit Windows 10 Apr 2026

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 forced a hard shutdown. Booted from a USB recovery drive. He sat in the dark, rain hammering the window, as the command prompt blinked at him like an unimpressed god.

He ordered new RAM sticks the next morning. And this time, he backed up the registry first.

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. change ram size in regedit windows 10

He clicked OK. The key turned bold, as if the system itself was nervous.

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.

The screen went black. The fans spun up, then down. Then… nothing. A blinking cursor on a black screen. Then, a blue screen. Not the sad ":( " one. An older, meaner one: . But Leo smiled

He right-clicked, created a new DWORD (32-bit) Value , and named it PhysicalMemorySize . He double-clicked it, selected , and typed: 16777216 .

Panic.

Leo’s old Windows 10 PC was a stubborn mule. It groaned when he opened more than three Chrome tabs, stuttered during video calls, and took a full minute to render a spreadsheet. He had no money for new RAM sticks. But he had something else: a desperate hope and a half-remembered forum post. Booted from a USB recovery drive

He typed: regedit .

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 .

16 GB. His PC had only 4 GB physically installed.