Lenovo G710 Very weird GPU issue
Hello Friends,
I'm puzzled about this laptop.. It has a dedicated Nvidia 820m GPU and BSoD's
randomly. The GPU works fine with 3D Mark and FurMark. Memtest reported no
issues and the CPU is fine. So far so good.
Now the weird part begins:
Furmark reports the GPU as a GT710m. GPU-Z as 820m and the Nvidia Control
Panel sometimes as 820m and sometimes as 720m. I can't install the official
drivers from nvidia for either the 720m or 820m. It always says that the installer
can't find a compatible GPU. But Windows installs the 820m drivers by itself.
When running 3D Mark or Furmark no BSoD's appear. But it instantly crashes
when closing the internal "benchmark" in GPU-Z with
VIDEO_SCHEDULER_INTERAL_ERROR. This typically tells me that the GPU is
dying. But no other Benchmark causes issues, even when running it for hours.
One thing I noticed: When stressing the CPU it thermal throttles to around
0.8GHz after some time. The frequency does not normalize after that, even when
the CPU sits at 50C. It just stays at 0.8GHz. Restarting the Laptop has no effect
either. Only completely shutting it down once restores the normal clocks.
I'm confused to hell... Did someone experience this behavior?
Screenshots were taken via TeamViewer. I don't have physical access to it at the
moment but I can do remote tests.
Sidenote: I analyzed the minidumps of all crashes and it was never caused by the
Nvidia driver. Always something random kernel or windows related. Only when
forcing it to crash via the GPU-Z benchmark it fails with the usual nvxxxxx.sys file.
I'm puzzled about this laptop.. It has a dedicated Nvidia 820m GPU and BSoD's
randomly. The GPU works fine with 3D Mark and FurMark. Memtest reported no
issues and the CPU is fine. So far so good.
Now the weird part begins:
Furmark reports the GPU as a GT710m. GPU-Z as 820m and the Nvidia Control
Panel sometimes as 820m and sometimes as 720m. I can't install the official
drivers from nvidia for either the 720m or 820m. It always says that the installer
can't find a compatible GPU. But Windows installs the 820m drivers by itself.
When running 3D Mark or Furmark no BSoD's appear. But it instantly crashes
when closing the internal "benchmark" in GPU-Z with
VIDEO_SCHEDULER_INTERAL_ERROR. This typically tells me that the GPU is
dying. But no other Benchmark causes issues, even when running it for hours.
One thing I noticed: When stressing the CPU it thermal throttles to around
0.8GHz after some time. The frequency does not normalize after that, even when
the CPU sits at 50C. It just stays at 0.8GHz. Restarting the Laptop has no effect
either. Only completely shutting it down once restores the normal clocks.
I'm confused to hell... Did someone experience this behavior?
Screenshots were taken via TeamViewer. I don't have physical access to it at the
moment but I can do remote tests.
Sidenote: I analyzed the minidumps of all crashes and it was never caused by the
Nvidia driver. Always something random kernel or windows related. Only when
forcing it to crash via the GPU-Z benchmark it fails with the usual nvxxxxx.sys file.
Attached Files
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