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docs: add Windows installation & troubleshooting guide for RTX 50-series (Blackwell) (#6286)

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* Added Windows RTX 50-series troubleshooting guide

* Update README.md to link Blackwell Windows Troubleshooting Guide

Added a troubleshooting guide for Windows installation issues with RTX 50-Series.

* Fix install path, troubleshooting accuracy and markdown for PR #6286

* Condense Windows Blackwell tips into README and drop standalone guide for PR #6286

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Co-authored-by: Daniel Han <danielhanchen@gmail.com>
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Harshita 2026-06-20 16:19:45 +05:30 • committed by GitHub
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@ -122,6 +122,7 @@ You can use the same Docker image as Unsloth Studio.
#### AMD, Intel:
For RTX 50x, B200, 6000 GPUs: `uv pip install unsloth --torch-backend=auto`. Read our guides for: [Blackwell](https://unsloth.ai/docs/blog/fine-tuning-llms-with-blackwell-rtx-50-series-and-unsloth) and [DGX Spark](https://unsloth.ai/docs/blog/fine-tuning-llms-with-nvidia-dgx-spark-and-unsloth). <br>
**Windows + RTX 50-Series (Blackwell) tips:** if a kernel fails to build with `RuntimeError: Failed to find C compiler`, install the Visual Studio Build Tools 2022 (Desktop development with C++) and run from the x64 Native Tools Command Prompt. If you hit `no kernel image is available` or torch reports a `+cpu` build, reinstall with `uv pip install unsloth --torch-backend=auto` and clear `%USERPROFILE%\.triton\cache`. <br>
To install Unsloth on **AMD** and **Intel** GPUs, follow our [AMD Guide](https://unsloth.ai/docs/get-started/install/amd) and [Intel Guide](https://unsloth.ai/docs/get-started/install/intel).
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