My Lenovo Legion Pro 5 16IRX8 randomly becomes completely unresponsive—no keyboard shortcuts or applications work, so I have to hold the power button to restart it. After rebooting, it often freezes another two or three times before starting normally. It may then run for a few hours before freezing again. Occasionally, Windows enters Automatic Repair and shows a blue recovery screen, but exiting back to Windows a few times usually lets me continue using the laptop.
I performed a clean Windows reinstall from a bootable USB drive, but the freezing continued. The crashes do not seem tied to gaming or any particular application, and I have not found useful minidump files. The system has an Intel Core i7-13700HX, RTX 4070 Laptop GPU, 16 GB of DDR5 memory, and a 1 TB Samsung PM9A1 NVMe SSD.
Could this be related to the known instability concerns involving some 13th-generation Intel processors, or is the RAM, SSD, BIOS, or another component more likely? I am considering having the laptop inspected and possibly replacing the NVMe drive, but I would appreciate a second opinion and suggestions for confirming the faulty component first.
2 Answers
Since a clean Windows installation did not change anything, a hardware or firmware problem is more likely than a normal driver or software issue. Test the memory modules individually with a thorough memory diagnostic, and run the laptop's built-in hardware tests if available. Also check the SSD's health and the Windows event logs for storage or WHEA hardware errors. A failing SSD can cause freezes and recovery loops, but replacing it without testing may not solve the problem.
The 13th-generation HX processors are worth investigating, but freezing alone cannot confirm a failing CPU. First update the BIOS and chipset firmware from Lenovo, since BIOS updates can include processor stability and microcode fixes. Then test with one RAM module at a time and compare behavior under CPU and memory stress tests. If memory, storage, temperatures, and firmware all check out yet the system still locks up, a motherboard or CPU fault becomes much more plausible.

There usually is not one definitive software test that proves a CPU core is failing. It is mostly a process of elimination, along with hardware error records, crashes during CPU testing, and whether the problem remains after BIOS updates and independent memory and storage tests.