Have a look in the Eventlog, to see if you can see anything useful?
You do realise there’s a reason for the support template, right?
Are you using a laptop or headless server? Whats your audio endpoint(s)?
Library size and location?
If you by Eventlog mean files in the Log-folder then there is nothing written today. When I start Roon (headless server) it does not show up to be running in Windows Task Manager.
Go to your Windows desktop, click the start /Windows flag and type:
eventvwr.exe
Press Enter and find the Application log, if Roon crashes you’ll see something noted about it.
Are you running any form of antivir/anti-malware?
Have you tried downloading the latest Roon Server from their site and simply installing it “on top” of your old install?
(I’m assuming you are running Roon Server x64, not the full GUI version?)