SupportAssist auto-start on non-Dell PC and cannot be disabled or uninstalled

Hi, I ran the Dell Support Assistant on my non-Dell PC by mistake. It says it can't be installed on non-Dell PCs, fair enough. But now everytime I start up my system there's a Dell Assist tray icon showing. In my Task Manager, there's a process with the commandline as C:\Users\UserName\AppData\Roaming\PCDr\Repair\aulauncher.exe /forceinstall /silent /bart and BundleApplicationRepairTool.exe running in the background.

So I have 2 questions.

1. I can't find any startup item related to it anywhere (including Task Manager startup tab, registry Run/RunOnce). So how does it self-start? 

2. There's no item in the Control Panel that I can choose to uninstall because it didn't installed at the beginning. So how can I get rid of it?