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I bought a used ThinkPad L540 and it crashes and freezes all the time. After a reboot the GNOME Logs app reports the following errors:

kernel: mce: [Hardware Error]: PROCESSOR 0:306c3 TIME 1671640567 SOCKET 0 APIC 2 microcode 28
kernel: mce: [Hardware Error]: TSC 0 
kernel: mce: [Hardware Error]: CPU 2: Machine Check: 0 Bank 0: f2003380000f0150

Most of the time the freezes occur when I'm running multiple and/ or intensive tasks but sometimes the laptop even freezes while I'm just watching YouTube Videos.

I read that this error can be caused by faulty ram, so I ran a MemTest86 and got no errors. I also replaced the thermal paste, because I read that overheating can be the reason for this error. It didn't help.

These are my specs:

Laptop model: Lenovo ThinkPad L540

CPU: Intel Core i7-4700MQ

RAM: 2x 4GB DDR3-1600

OS: Archcraft

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A reboot might be caused by heat, but a crash is somthing bigger, check the dirvers and update them. This problem is more foucsed on the hardware side. No clear answer could be given without physical inspection. I suggest to send it to a trusted local speicalist. --Good luck and give us updates for more further help to the community

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  • Your answer could be improved with additional supporting information. Please edit to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers in the help center.
    – Community Bot
    Commented Dec 29, 2022 at 20:02
  • Thank you for your answer. I took the laptop to a local repair shop. The person running the shop said that the problem is probably caused by a faulty CPU. Thankfully the CPU of this model isn't soldered to the motherboard. So I baught a new CPU, changed it and now it works fine.
    – TechNoob
    Commented May 18, 2023 at 0:02

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