New-SPConfigurationDatabase: The user does not exist or is not unique

1. Create a new local user “svc_sharepoint”
2. Add it to the Administrators group
3. Delete the Config and AdminContent databases via SQL Server Management Studio
4. Reopen PowerShell and run New-SPConfigurationDatabase with the following

• DatabaseName: SharePoint2010_Config
• DatabaseServer: [SERVERNAME]
• FarmCredentials [SERVERNAME\ACCOUNT]
• PassPhrase: [PASSWORD]