My lenovo flex 5 goes black randomly
- Thread starter laron9er
- Start date
ubuysa
Sysnative Staff
BSOD Kernel Dump Senior Analyst
Contributor
Hello and welcome to the forum!
- How long have you owned this Lenovo Ideapad and did you buy it from new?
- One common problem with notebooks is overheating, so please download and install HWMonitor (free). Run that app, find the first section labelled 'Temperatures' (with labels like SYTIN, CPUTIN, etc.) and post a screenshot of that.
- Then find the CPU temperatures section, expand that section so we can see all the cores and post a screenshot of that.
- Have you installed all available Windows updates?
- Have you used a third-party driver search and install tool (like DriverEasy)?
- Have you ever run a registry cleaner (of any sort)?
- Are the reboots truly random, or can you predict them,? Do they happen when using certain apps?
- Does the laptop power off and then reboot or does it just reboot?
I bought this system on September 2021. And I bought it new.
I just had couple of browser tabs open during these readings.
Yes windows is upto date
NO
NO
Random
System completely stops abruptly and then boots up again
The event viewer shows these events before the shut down.
So, is this because of cpu overheating? Also what can I do to solve this.
Source: Kernel-Power, Id: 125
ACPI thermal zone \_TZ.TZS0 has been enumerated.
_PSV = 0K
_TC1 = 0
_TC2 = 0
_TSP = 0ms
_AC0 = 0K
_AC1 = 0K
_AC2 = 0K
_AC3 = 0K
_AC4 = 0K
_AC5 = 0K
_AC6 = 0K
_AC7 = 0K
_AC8 = 0K
_AC9 = 0K
_CRT = 383K
_HOT = 0K
minimum throttle = 0
_CR3 = 0K
Source: Kernel-Power, Id: 125
ACPI thermal zone \_TZ.TZS1 has been enumerated.
_PSV = 0K
_TC1 = 0
_TC2 = 0
_TSP = 0ms
_AC0 = 0K
_AC1 = 0K
_AC2 = 0K
_AC3 = 0K
_AC4 = 0K
_AC5 = 0K
_AC6 = 0K
_AC7 = 0K
_AC8 = 0K
_AC9 = 0K
_CRT = 399K
_HOT = 0K
minimum throttle = 0
_CR3 = 0K
ubuysa
Sysnative Staff
BSOD Kernel Dump Senior Analyst
Contributor
Those 125 messages on reboot after the problem are just power option enumeration messages.
Could you repeat the HWMonitor temperature display again please, this time in these two scenarios...
Does it behave in this way when the power cord is plugged in or is this only on battery?
Could you repeat the HWMonitor temperature display again please, this time in these two scenarios...
- Start HWMonitor and expand the CPU temps again and then leave the laptop idle for a few minutes. Take a screenshot of the HWMonitor display then and post it please.
- Next, with HWMonitor still running and with the CPU temps section expanded, run the heaviest load you have. Play the most demanding game, run the most CPU-intensive apps you have to drive the CPU as hard as you are able. Then post a screenshot of the HWmonitor temps then.
Does it behave in this way when the power cord is plugged in or is this only on battery?
IDLE
Downloading
My system heats excessively whenever writing into or reading from the drive. I didnt have games to run so I downloaded one and these are temperatures while dowloading
Stressed
I started the game. I didn't play the game just let it run for some minutes and this was the temperature.
The temperatures are generally higher when connected to the charger. Also while plugged in the temperature rises when the system goes in screen saver due to inactivity.
The shut downs occur in both cases.
During my last abrupt shut down the temp was 52 degrees (I was using core temp to monitor the temperatures in the taskbar tray).
Downloading
My system heats excessively whenever writing into or reading from the drive. I didnt have games to run so I downloaded one and these are temperatures while dowloading
Stressed
I started the game. I didn't play the game just let it run for some minutes and this was the temperature.
The temperatures are generally higher when connected to the charger. Also while plugged in the temperature rises when the system goes in screen saver due to inactivity.
The shut downs occur in both cases.
During my last abrupt shut down the temp was 52 degrees (I was using core temp to monitor the temperatures in the taskbar tray).
ubuysa
Sysnative Staff
BSOD Kernel Dump Senior Analyst
Contributor
Max temp for your CPU is 95°C and whilst you're getting hot there those temps are OK. I'm puzzled that the CPU temperature rises when the screensaver kicks in? That sounds as though some background process might be starting when the system is idle. Anyway, this doesn't seem to be temperature related - at least not CPU temperature related.
Whatever this is it certainly doesn't look like a software or driver problem. All of the reboots in the log happen suddenly, there seems to have been no opportunity for Windows error recovery to become involved (there are no BSODs for example) and that looks very much as though some hardware is failing underneath Windows. There are a couple of things we can try though...
1. Windows will auto-restart if a 'system failure' occurs and you can stop it doing this. That might just let you see any error messages perhaps. In the Run command box enter the command sysdm.cpl and click OK. The System Properties dialog will open. Click the Advanced tab and then the bottom Settings button (in Start-up and Recovery). Ensure that your dialog looks like this...
It's important that the 'Automatically restart' box is NOT checked.
2. The other thing you can try is to start Windows in Safe Mode (without networking). In Safe Mode a stripped-down version of Windows is loaded with only critical services and drivers loaded, typically no third-party drivers are loaded. This means that you won't be able to do any useful work in Safe Mode; many devices will not work properly (or at all) because their drivers have not been loaded. Your display will be very low resolution for example, because you'll be using the basic Windows display driver. The point of Safe Mode is to see whether it fails, so do try and use it as much as you're able (which won't be very much), also leave it to sit idle in Safe Mode for a while (make sure it doesn't sleep, hibernate or shutdown). If it fails in Safe Mode then it's prety definitely a hardware problem, but if it doesn't fail then we have a fighting chance of finding out what's causing it.
Whatever this is it certainly doesn't look like a software or driver problem. All of the reboots in the log happen suddenly, there seems to have been no opportunity for Windows error recovery to become involved (there are no BSODs for example) and that looks very much as though some hardware is failing underneath Windows. There are a couple of things we can try though...
1. Windows will auto-restart if a 'system failure' occurs and you can stop it doing this. That might just let you see any error messages perhaps. In the Run command box enter the command sysdm.cpl and click OK. The System Properties dialog will open. Click the Advanced tab and then the bottom Settings button (in Start-up and Recovery). Ensure that your dialog looks like this...
It's important that the 'Automatically restart' box is NOT checked.
2. The other thing you can try is to start Windows in Safe Mode (without networking). In Safe Mode a stripped-down version of Windows is loaded with only critical services and drivers loaded, typically no third-party drivers are loaded. This means that you won't be able to do any useful work in Safe Mode; many devices will not work properly (or at all) because their drivers have not been loaded. Your display will be very low resolution for example, because you'll be using the basic Windows display driver. The point of Safe Mode is to see whether it fails, so do try and use it as much as you're able (which won't be very much), also leave it to sit idle in Safe Mode for a while (make sure it doesn't sleep, hibernate or shutdown). If it fails in Safe Mode then it's prety definitely a hardware problem, but if it doesn't fail then we have a fighting chance of finding out what's causing it.
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