Question Lenovo gaming computer randomly reboots when sitting idle ?

Jun 17, 2023
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I have a Lenovo Legion T5-26IOB6 Gaming PC that I bought back in January. From the moment I took it out of the box, I have had instances where the computer randomly reboots back to the Windows login screen. There is no set time frame for when the reboot occurs, it can be a couple of hours, could be 15, 20, 30 minutes and I come back and find the computer rebooted.

Lenovo has done a system scan and found no issues. They are unable to check the power supply if that had happened to be the case. Microsoft Support did their thing, checking for corrupt files in Windows, making some changes in the Registry, even rolling back the OS from Windows 11 to 10 (thinking that would do something).

The Event Log shows the same error and debug codes for each and every single reboot (see attached images below).

I have done two clean reinstalls of Windows 11 using the recovery feature. Nothing Lenovo, Microsoft or I have done has resolved this issue. Earlier this afternoon after talking to MicroCenter (where I bought the system), they offered to have me bring the computer in free of charge and they would run a complete diagnostic on it (which took 4 hours while I literally stood and watched) and found nothing wrong with the system. I have no idea what to do at this point.

No overclocking or tweaking of anything on the computer. I do flight simulator with FSX and some Saitek flight sim hardware (yoke, rudder pedals, etc..). Have never overheated the CPU or GPU, they are monitored using MSI Afterburner. Power settings are set for nothing to shut off or go into hibernation. I livestream on YouTube and don't want the computer going to sleep if I am flying and I step away for a break during a long flight.

Just to reiterate, this issue happened before I loaded any flight sim software or plugged any hardware devices onto this machine and continues today. Microsoft, Lenovo and MicroCenter have stated FSX or any of my flying hardware should cause this, and I ran all this on my previous system with Windows 10 without any issues for years.

I hope that someone out there can help me resolve this issue before I sledgehammer this PC and leave it on MIcroCenter's front doorstep. Thanks in advance!

System Specs:

Lenovo Legion T5-26IOB6 Desktop PC
Intel Core i5 11th Gen 11400 2.6GHz Processor
NVIDIA GeForce RTX 3050 8GB GDDR6
16GB DDR4-3200 RAM
512GB SSD+1TB HDD
Microsoft Windows 11 Home
10/100/1000 Network
2x2 802.11ax WiFi 6
Bluetooth 5.1

 
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Can you return the PC under warranty? I would advise doing that and just change it for a different one, sounds like a hardware issue of some sort anyway.

I would probably blame the power supply (what is it rated?) - maybe run 3d mark for a while to see if high power draw/temps cause this.
Also check in Event viewer the last event **before** the shutdown - could be a hardware conflict of some sort
 
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They “claim” I am outside the return window but I’m going to have a talk with the store manager and also make a call to corporate as well to see what I can do. I’ll post the results later.

As for the power supply, it’s rated at 750W. So it’s more than adequate for what I do with it.

Edit: 6/19 - Found out after talking to Lenovo again this computer has a 650W power supply.
 
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The only other thing I can suggest is, make sure that the default Microsoft drivers are installed - get rid of all Lenovo drivers and bloatware that comes with PC's like this (check in device manager)
I guess I could just wipe the hard drive completely and reinstall a copy of windows that have sitting around and see if that does anything.
 
On the power supply being 750 watts, just because they say it is 750 watts doesn’t mean a lot. Your 750 watt power supply could be very low quality and causing issues. If they will allow you to return the pc, definitely do so.
Actually, just found out this system has a 650W power supply in it, not 750 like I was led to believe. Still going to try and return this for a full refund if possible.