PowerShell Script Required for Windows 10

Job ID: 34041548

Budget: $10 – $30 USD

I need a Windows 10 PowerShell script that that will do the following:-

Each day at 17:00 search a folder called d:\Backup Folder\PC backups\ for files with the string "Diff" in them. If it finds any that have that string and are older than 1 week it will delete them without asking,