**Quick Background:**
I am fairly new to VS Code and LWCs. I've been working on a LWC and deploying to a sandbox (we'll call it GSB), then using change sets to push to prod. I recently refreshed the sandbox and I could no longer deploy to GSB. I assume this is to be expected, since the password changed in GSB as part of the refresh. No problem, I'll just reauthorize the org.

**Problem:**
This is where the issue is. I can't authorize a sandbox (after a refresh) to deploy code because VS Code doesn't seem to recognize any sfdx commands, even though SF CLI and all extensions are installed.

Right now when I try to authorize an org, the error in the Output section at the bottom is:
"Starting SFDX: Authorize an Org

    07:35:27.444 sfdx org:login:web --alias SB1 --instance-url https://test.salesforce.com 
    --set-default
    '"C:\Users\madiaz\AppData\Local\sfdx\client\bin\..\7.209.6-8ba3197\bin\sfdx.cmd"' 
    is not recognized as an internal or external command,
    operable program or batch file.
    07:35:27.466 sfdx org:login:web --alias SB1 --instance-url https://test.salesforce.com --set-default

I've tried disabling and uninstalling the extensions (including the CLI), updating to most recent CLI version, uninstalling and reinstalling VS Code, closing & restarting, reviewing other similar questions here, but I have not yet been able to get it to work. In fact none of the SFDX commands seem to work right now. They all get the same "not recognized..." error.

**Question:**
Any ideas on what else to try to resolve this issue?