Add fix_service guide

docs/fix_service.md

@@ -0,0 +1,21 @@
+# Fix Windows Services
+
+## Corrupt service - sppsvc
+
+- Follow the steps below only if the script shows that `sppsvc` **service** is corrupt. Do not follow otherwise.
+- Download and extract the `sppsvc` registry zip file for [Windows 10](https://app.box.com/s/016qsq922nt3kgg744l07y115k9wph4b) / [Windows 11](https://app.box.com/s/zq70tlbuo3iwxjd76ly26sz0gs2b98n0)
+- Be careful, run these files only if they are matching with your Windows version, if not then ask for help [here](troubleshoot.md).
+- Run the file, restart the system (using the restart button), and try the activation script again.
+- If the issue persists, contact us [here](troubleshoot.md).
+
+---
+
+## Corrupt service - Null 
+
+- The script may show that `Null service is not running, script may crash...` 
+- Follow these steps only if the script crashes after that.
+- Download and extract this Null service registry zip [file](https://app.box.com/s/eczou3mvn6atronnd3nad2sqtb66h0lw).
+- Run the file, restart the system (using the restart button), and try the activation script again.
+- If the issue persists, contact us [here](troubleshoot.md).
+
+---

docs/guide_links.md

@@ -10,6 +10,7 @@ If you are facing any error, the script should tell you which guide you need to
 -   [Fix WPA Registry](https://gravesoft.dev/fix-wpa-registry)
 -   [Licensing Servers Issue](licensing-servers-issue.md)
 -   [Issues Due To Gaming Spoofers](issues_due_to_gaming_spoofers.md)
+-   [Fix Windows Services](fix_service.md)
 -   [Change Edition Issues](change_edition_issues.md)
 -   [Windows Evaluation Editions](evaluation_editions.md)
 -   [Fix Powershell](https://gravesoft.dev/fix_powershell)