[BUG] AVX detection issue on c7i.xlarge instance preventing execution

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Claude crashes complaining CPU lacks AVX support while the c7i.large instance being used clearly has such instructions.

What Should Happen?

Claude should start but instead crashes complaining about missing AVX instructions on a CPU that clearly has such instructions.

Error Messages/Logs

============================================================
Bun v1.3.13 (6db6c97b) Windows x64 (baseline)
Windows v.win10_rs5
Args: "C:\Users\Administrator.EC2AMAZ-MC579PT\.claude\downloads\claude-2.1.117-win32-x64.exe" "install" "latest"
Features: Bun.stderr(2) Bun.stdin(2) Bun.stdout(2) jsc no_avx2 no_avx spawn(2) standalone_executable yaml_parse claude_code 
Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:crypto" "node:dns" "node:events" "node:fs" "node:fs/promises" "node:http" "node:https" "node:module" "node:net" "node:os" "node:path" "node:path/posix" "node:path/win32" "node:perf_hooks" "node:process" "node:stream" "node:stream/consumers" "node:timers/promises" "node:tls" "node:tty" "node:url" "node:util" "node:vm" "node:zlib" "ws" "node:http2"
Elapsed: 481ms | User: 453ms | Sys: 171ms
RSS: 0.33GB | Peak: 0.33GB | Commit: 0.46GB | Faults: 82140 | Machine: 33.81GB

CPU lacks AVX support. Please consider upgrading to a newer CPU.
panic(main thread): Segmentation fault at address 0xE0

panic: Segmentation fault at address 0x0
panicked during a panic. Aborting.

Steps to Reproduce

Run Claude on a c7i.xlarge AWS instance with Windows Server 2022

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

claude-2.1.117

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_