Irql-not-less-or-equal When Installing Windows 10 [exclusive] Access
Power-saving features can cause the CPU voltage to drop too low during the installation process.
IRQL_NOT_LESS_OR_EQUAL (Stop Code: 0xA) error during a Windows 10 installation typically occurs when a device driver or system memory attempts to access an invalid memory address while at a raised interrupt request level. Because this happens during the setup process, it often points to hardware incompatibility, faulty RAM, or corrupt installation media. Microsoft Learn Primary Causes During Installation Memory Issues irql-not-less-or-equal when installing windows 10
Reset your BIOS to "Load Optimized Defaults." Turn off any CPU overclocks or XMP/DOCP profiles for your RAM. Power-saving features can cause the CPU voltage to
This error is rarely caused by Windows 10 itself during installation — it’s almost always hardware or BIOS configuration. Don’t keep retrying the same failing setup; change one variable at a time. change one variable at a time.