- Dec 28, 2024
- 2
- 0
- 10
Hello,
I have a 4.5-year-old Lenovo Yoga C940 15IRH that has somewhat recently (2.5 weeks ago) begun randomly freezing. This can occur anywhere from during bootup to after ~10 minutes. However, it happens in bursts. Sometimes, it goes days between freezes, but once it starts, it is very frequent and only seems to stop by just turning the laptop off for a while. The freezes happen in both Windows 10 and Ubuntu 22.04 (booted off a USB), so I suspect hardware failure.
Laptop Specs
Some things I have checked so far:
Looking at errors in Event Viewer. There were quite a few errors but nothing that I thought seemed relevant/corresponded to the times of the freezes. The only exception is errors just saying the computer powered down incorrectly (probably because the only way I can recover from the freeze is force rebooting the computer)
My current thought is the CPU and/or the integrated graphics is screwed up somehow. It did run very hot for a long time (like regularly hitting 85-90C during use, over the course of a few years). I recently redid the thermal paste on it (after the issue started occurring) and someone a bit more experienced than me said the thermal paste on there wasn't great. Temps are better but no impact on the crashing.
*Potential* Other Symptoms:
I have no idea if these are related to the issue but I'll leave them here in case they are.
- I have never seen the issue occur while a game is running in the foreground. Albeit sometimes it can go days in between crashes, so I may just not have experienced it yet. Besides games, almost nothing is set to run off the dedicated GPU, so that may be an important difference.
- Programs crashing/failing: NVIDIA control panel crashes a second or so after booting up. Lenovo Vantage has also begun failing to launch (although I think this started after the issue begun)
- My battery is extremely screwed up. It pretty frequently reads fully charged but over the course of anywhere from instantaneously to a few minutes can discharge to 0% Sometimes it still holds a charge for a few hours though. I figure over the years this took a toll on the charger because that died about 2 weeks before the issues started. I did temporarily have to replace the charger with a somewhat homemade charger that was of sketchy quality and not rated for the correct power.
Does anyone have any thoughts/suggestions on how to resolve or diagnose this issue? Also sorry if this post isn’t in the proper location or is formatted improperly, this is my first post here.
I have a 4.5-year-old Lenovo Yoga C940 15IRH that has somewhat recently (2.5 weeks ago) begun randomly freezing. This can occur anywhere from during bootup to after ~10 minutes. However, it happens in bursts. Sometimes, it goes days between freezes, but once it starts, it is very frequent and only seems to stop by just turning the laptop off for a while. The freezes happen in both Windows 10 and Ubuntu 22.04 (booted off a USB), so I suspect hardware failure.
Laptop Specs
CPU: Intel Core i7-9750H
iGPU: UHD Graphics 630
dGPU: GTX 1650 Max Q
RAM: 16GB DDR4 (soldered)
Some things I have checked so far:
- Windows Memory Diagnostic (nothing found)
- chkdsk (nothing, plus as discussed below I have run it without the SSD)
- Pulled the SSD and battery out and ran off Ubuntu USB and wall power
- Updated to most recent BIOS. No warning signs next to any drivers in Windows 10.
Looking at errors in Event Viewer. There were quite a few errors but nothing that I thought seemed relevant/corresponded to the times of the freezes. The only exception is errors just saying the computer powered down incorrectly (probably because the only way I can recover from the freeze is force rebooting the computer)
My current thought is the CPU and/or the integrated graphics is screwed up somehow. It did run very hot for a long time (like regularly hitting 85-90C during use, over the course of a few years). I recently redid the thermal paste on it (after the issue started occurring) and someone a bit more experienced than me said the thermal paste on there wasn't great. Temps are better but no impact on the crashing.
*Potential* Other Symptoms:
I have no idea if these are related to the issue but I'll leave them here in case they are.
- I have never seen the issue occur while a game is running in the foreground. Albeit sometimes it can go days in between crashes, so I may just not have experienced it yet. Besides games, almost nothing is set to run off the dedicated GPU, so that may be an important difference.
- Programs crashing/failing: NVIDIA control panel crashes a second or so after booting up. Lenovo Vantage has also begun failing to launch (although I think this started after the issue begun)
- My battery is extremely screwed up. It pretty frequently reads fully charged but over the course of anywhere from instantaneously to a few minutes can discharge to 0% Sometimes it still holds a charge for a few hours though. I figure over the years this took a toll on the charger because that died about 2 weeks before the issues started. I did temporarily have to replace the charger with a somewhat homemade charger that was of sketchy quality and not rated for the correct power.
Does anyone have any thoughts/suggestions on how to resolve or diagnose this issue? Also sorry if this post isn’t in the proper location or is formatted improperly, this is my first post here.
Last edited:
Facebook
Twitter
Instagram