Lenovo Y410 auto shutdown

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Hi, Make the following check:
If you can open back cover, try to check and clean fan to ventilate or there's already available docking station with ventilation pact it can help.
You should not use a laptop on a soft surface such as a duvet or bed covering. The device needs to have free air intake and outlet to cool the processor. If you block the intake, which is probably under the machine, it will overheat and shut down. If you want to use it in bed put it on a hard surface such as a large book, so that the air intake cannot be blocked.
1. Boot your system in "safe mode" and check whether the problem persists. If so the problem is due to some freshly installed software, which you can of uninstalling. 2. If the shutdown happens when you are running on battery then check your power management software whether the battery is draining out rapidly. If problem is still there, then instead of trying your self, please consult your local lenovo technician / support centre.

Thank you!

When systems power off suddenly, always suspect - the power first. I would then look at heat and physical connections next as culprits. Memory errors almost always show up as blue screens.
I say try a new power supply and see what it does. Its not a lot of money either way.

Run CPUID Hardware Monitor and watch your temps. You will have to turn logging on or you will lose the data in a crash.
Make sure your CPU heatsink is still connected properly. Things have a way of working loose.

This sounds like a overheating problem (a CPU thermal shutdown).
This is caused by a faulty fan or the heat-sink and fan is clogged with dust. Check the fan to see if it spins freely, if not replace the faulty fan. Check the fan/heatsink assembly and remove/vacuum the dust from these components.

reinstall OS...mostly some virus r some bug

motherboard thermal section problem
joe

you should check the systems temperature. and if that's the problem you have to use extra coolers

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This problem exist because once the 31GB default partition is formatted NTFS, it reduces in size. So, I found this solution.

the freeze during shutdown could be because any of these possibilities.

1. Program or TSR currently open does not close or does not release itself from memory.
2. Incompatibility, corrupt or damaged driver.
3. Temporary files.
4. Hard disk full, has errors or needs defragmentation ran on it.
5. DOS driver, configuration error or confliction in the autoexec.bat / config.sys.
6. Advanced Power Management issue
7. Virtual device driver issue.
8. Corrupt shutdown sound or issue with sound drivers.
9. Internet Explorer 4.01.
10. Norton antivirus 'Load Auto-Protect at Startup' issue.