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Tom’s Hardware
Tom’s Hardware
Technology
Aaron Klotz

Modder uses Claude AI to rewrite BIOS so they can boot unsupported 12 P-core Bartlett Lake CPU in Windows on a Z790 motherboard

Windows Asus Intel Corporation
Intel 12th Generation Alder Lake CPU.

After getting an OEM-exclusive 12 P-core Bartlett Lake CPU to post on an Asus Z790-AYW OC Wi-Fi, modder 'kryptonfly' on the Overclock.net forums has finally managed to boot the same chip into Windows using the same motherboard. A thread on the Overclock.net forums shows the numerous hurdles kryptonfly had to overcome to get Bartlett Lake to boot into Windows, with screenshots to prove everything.

The process involved BIOS modding with the help of Claude AI and numerous trial-and-error runs. After successfully getting the chip to POST, the main issue Krytonfly had to overcome next was a memory initialization issue preventing the system from going beyond the initial POSTing stage to boot into Windows. To achieve this, Kryptonfly fooled the Z790 motherboard into thinking the Bartlett Lake CPU's system agent and PCIe graphics were part of a 13th/14th Gen Raptor Lake CPU.

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