Good troubleshooting so far — you’ve already covered the obvious checks. Let’s run a short, prioritized checklist (safe → more invasive) with exact commands and the specific things I want you to paste back if it still fails. I’ll also call out the most common hidden causes so you don’t miss them. Many users fix sudden “no input and no output” by restarting the audio services, re‑selecting/enabling endpoints, disabling exclusive mode/enhancements, or rolling back a bad update.
Quick checks (2–5 minutes)
1) Confirm the Windows audio services are running (you already suggested this — do it once more and send the output if anything looks different):
- Open an elevated PowerShell (right‑click Start → Windows Terminal (Admin)) and run:
Get‑Service AudioSrv, AudioEndpointBuilder, MMCSS
If any show Status Stopped, run:
Restart‑Service -Name AudioSrv,AudioEndpointBuilder,MMCSS -Force
(If Restart fails, set them to auto and start:
sc config AudioSrv start= auto
sc start AudioSrv )
(Recommendation to check/restart services comes from standard troubleshooting steps).
2) Check sound endpoints and meters
- Open Settings → System → Sound. Under Output and Input, pick each device and watch the volume meter while playing sound or speaking. Also run: Win+R → mmsys.cpl → Playback and Recording tabs: right‑click → Show Disabled Devices and Show Disconnected Devices → enable and set the expected device as Default. If the meters move but you still get no sound into apps, paste what you see.
3) App routing / per‑app device preferences
- Settings → System → Sound → Advanced → App volume and device preferences. Make sure none of the apps are routed to an unexpected device or muted. This often silently reroutes audio.
If quick checks still show zero in/out, do these next steps in order:
Step A — Disable enhancements & exclusive mode (very common hidden culprit)
- Win+R → mmsys.cpl → Recording (or Playback) → double‑click your device → Advanced tab → uncheck “Allow applications to take exclusive control of this device.” On the Enhancements / Signal Enhancements tab, check “Disable all enhancements” (or similar). Apply and test. Numerous threads show this fixing apps that “steal” the audio chain.
Step B — Run the built‑in troubleshooters
- Settings → System → Troubleshoot → Other troubleshooters → run “Playing Audio” and “Recording Audio”. These can auto‑fix device defaults and driver flags.
Step C — Reinstall / Roll back drivers (safe-first method)
- Device Manager → Sound, video and game controllers:
- Right‑click device → Properties → Driver tab → if Roll Back Driver is available try it.
- If not, right‑click → Uninstall device (do NOT tick “Delete the driver software” on first pass). Reboot so Windows reinstalls the driver.
- If that fails, download the vendor (motherboard/PC) audio driver and install it (OEM drivers often work better than the generic Microsoft driver). Community reports frequently show success after switching to OEM driver.
Step D — System file / component health (safe and recommended)
- Elevated PowerShell / CMD:
DISM /Online /Cleanup-Image /RestoreHealth
sfc /scannow
Reboot and test. These repair corrupt system components that sometimes break audio initialization.
Step E — Test with a clean profile / clean boot
- Create a temporary local user account (Settings → Accounts → Family & other users → Add account → “I don’t have this person’s sign‑in information” → Add a user without Microsoft account). Log into that account and test audio. If audio works there, it’s a profile/config issue; if it doesn’t, it’s system/driver/hardware level. (You mentioned this test — it’s a very useful isolation step.)
Step F — If the problem started after an update
- Check Settings → Windows Update → Update history. If you see a recent cumulative or driver KB, consider uninstalling that update or using System Restore to a point before the failure. If you want help removing a specific package, I can give the exact DISM or wusa command once you paste the KB or Package Identity.
Advanced checks (paste the outputs)
If none of the above fixes it, please paste the output of each of these (open elevated PowerShell or CMD and run; paste the text here):
1) Service status:
Get‑Service AudioSrv,AudioEndpointBuilder,MMCSS | Format‑Table -AutoSize
2) Device list (paste the Device Manager names shown under these panes):
- Open Device Manager → copy the exact entries under:
- Audio inputs and outputs
- Sound, video and game controllers
(If you prefer, take screenshots and attach them.)
3) powercfg blockers:
powercfg -requests
powercfg -lastwake
These show any app or driver preventing audio or sleep/power interactions (useful because audio endpoints sometimes get disabled by power requests).
4) Event Viewer errors
- Open Event Viewer → Windows Logs → System and filter for errors around the time you booted or tried playback (look for Kernel‑Power, WHEA, or AudioEndpointBuilder errors). Paste any errors/warnings that mention “Audio”, “AUDIOSRV”, “Endpoint”, or a driver name.
If a hardware/port issue is possible
- Try rear motherboard jacks if you’ve been using front panel jacks, or try a known‑good USB headset. If everything fails on every port and device, that strongly points to a driver/service or update issue rather than headset hardware.
What I can do next for you
- If you paste the three outputs above (service list, Device Manager names, and powercfg -requests) I will:
- Tell you exactly which service/device to restart or reinstall and the exact command.
- If it’s update/driver related, I’ll give the exact DISM/wusa command to remove the package (and how to block it).
- If it’s a profile issue, I’ll give the cleanup steps to fix the account without a full reinstall.
Useful references I used for these steps (so you know why we’re doing each one): Windows audio services, services restart, and driver/restore flows.
If you want, start by running the three paste‑requests above and tell me whether you’re on a laptop or desktop and whether your devices are analog 3.5mm or USB. I’ll be ready to walk through the exact next command or driver install.