Saw a seemingly suspicious process with the name "Windows(r)"

Your computer looks clean. To clean up some dead entries,

• run Autoruns as administrator
• switch to the Logon tab
• right click on each yellow highlighted entry and delete
• repeat for the Scheduled Tasks and Drivers tabs

Basically all yellow highlighted entries can be removed except those listed under Known Dlls.

I'm really not certain of what you may have glimpsed. You could look at what scheduled tasks executed around the time.

Right click the start button and select Windows Powershell.

Copy and paste in the following script and press enter:

[PSCustomObject]$obj = @()

Get-ScheduledTask | % {

    $obj += [PSCustomObject]@{

        URI = $_.URI

        Name = $_.TaskName

        Execute = $_.Actions.Execute

        Arguments = $_.Actions.Arguments

        LastRunTime = (Get-ScheduledTaskInfo -TaskName $_.URI).LastRunTime

    }

}

$obj  | Sort LastRunTime -Descending | Select URI, Name, LastRunTime, Execute, Arguments | Out-GridView

Scheduled tasks will be listed in the gridview starting from most recently executed.