> For the complete documentation index, see [llms.txt](https://demonitycc.gitbook.io/guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://demonitycc.gitbook.io/guide/possible-bugs-and-errors-fix/startservicew-failed-87-and-driver-install-start.md).

# StartServiceW failed:87 & Driver install/start

<div align="left"><figure><img src="https://1338565800-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgjUBIvCuNBEAxYG32UBu%2Fuploads%2FYoCHQtO7uHHD5pfpYw4r%2Fimager.webp?alt=media&amp;token=4f127966-f183-4161-a859-4d9689a0fe8b" alt="" width="563"><figcaption></figcaption></figure></div>

## **If you encounter this error, please follow these steps:**

* **Check if you have any antivirus software installed on your computer. If yes, temporarily disable it.**
* **If Valorant is installed, check if Vanguard (its anti-cheat) is running in the background. If it is, fully exit it.**
* **If Faceit is installed, completely terminate its Anti-Cheat program. (or uninstall Faceit)**

[<mark style="color:yellow;">**IF YOU STILL GET THE SAME ERROR, CLICK ON THIS TEXT TO APPLY THE RECOMMENDED STEPS.**</mark>](/guide/possible-bugs-and-errors-fix/a-driver-cannot-load-on-this-device.md)