04-19-2017 08:21 AM
I bought the yoga 500-15IBD(w/i5 5200U;GT 940m and 8G of RAM) in summer of 2015. At first the notebook is doing fine. But at mid-late 2016 the notebook start acting strange, the CPU start lock the frequency at 0.44 Ghz while charging. I find out that the BD prochot is the reason and I disable it with throttlestop. Then when I start gaming for few minutes the laptop just shut down, because of overheating. So I try playing game with BD prochot on and with battery. And the gameplay become very laggy. Not like low fps, but just very laggy. I monitored the CPU and the CPU just get throttled massively frequently and the frequency just go up and down. Which never happen before, the laptop used to be at least playable with consistent (low) fps.
What should I do. Is some component damaged? Should I clean the fan (I checked the fan and it seems fine to me)? Should I charge the thermal paste?
ps I try to stress test both CPU and GPU, it's fine when doing test alone. But when testing both CPU and GPU the temp of CPU just go sky high (~100 C) and the GPU seems to be cool in terms of temperature(75 C)and than the laptop shut down. Even when testing GPU only while CPU is idle both temp got ~75 C. When doing only CPU test CPU temp ~88 C max and GPU stay at ~55 C. It seems the GPU is transfering heats to the CPU.
04-19-2017 12:01 PM
Hi TropicalTuba1 ,
Welcome to the Community Forums.
Try to compare CPU usage in safe mode
As some processes may contribute to this isollating software issue with clean boot (reversible) may help.
Running the machine with a different Boot OS like live media to check if lag is also present.
On the hardware side , running further diagnostics can detect possible failures .
Cleaning the fan (ensuring vents are accesssible with no obstructions as well as re application of thermal compounds can help with PC's basic maintainance.
Update us how it goes.