Add Windows-specific build notes to installation guide

docs/install/from_source.rst

@@ -1,4 +1,4 @@
-..  Licensed to the Apache Software Foundation (ASF) under one
+..  Licensed to the Apache Software Foundation (ASF) under one
     or more contributor license agreements.  See the NOTICE file
     distributed with this work for additional information
     regarding copyright ownership.  The ASF licenses this file
@@ -232,6 +232,28 @@ The following commands can be used to install the extra Python dependencies:
     pip3 install tornado psutil 'xgboost>=1.1.0' cloudpickle
 
 
+.. _windows-build-notes:
+
+Windows-Specific Build Notes
+----------------------------
+
+If you're building TVM on Windows, note these platform-specific considerations:
+
+File Encoding
+.............
+- Ensure Python files are saved as **UTF-8 without BOM** (Byte Order Mark)
+- BOM characters cause ``SyntaxError: invalid non-printable character U+FEFF``
+- In VS Code: Bottom-right encoding → "Save with Encoding" → "UTF-8"
+
+Path Conventions
+................
+- Use forward slashes (``/``) in Python/CMake paths, not Windows backslashes
+- Example: ``python cmake/config.cmake`` not ``python cmake\\config.cmake``
+
+Common Windows Build Issues
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+
 Advanced Build Configuration
 ----------------------------
 
@@ -275,6 +297,21 @@ You can then run the following command to build
 
     cmake --build build --config Release -- /m
 
+CUDA Configuration
+..................
+For CUDA support on Windows:
+
+.. code-block:: batch
+
+   set CUDA_PATH=C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v11.8
+   set PATH=%CUDA_PATH%\bin;%PATH%
+   cmake .. -DUSE_CUDA=ON
+
+CMake & Compiler Setup
+......................
+- Use CMake GUI or specify generator: ``cmake -G "Visual Studio 16 2019" -A x64 ..``
+- Ensure Python is in PATH or specify: ``-DPython_EXECUTABLE=C:\Python39\python.exe``
+
 
 Building ROCm support
 ~~~~~~~~~~~~~~~~~~~~~