Hi JohnXI_W10,
Sorry to hear that you're experiencing this issue!
I am Bhavik, a Microsoft user like you. Please note, I am not a Microsoft employee and don’t have direct access to your account, but I will do everything I can to help you with your queries. :)
Since you can't pass "Chrome Inbuilt URLs" as a parameter in a BATCH file (check the screenshot - that will not work) - the easiest workaround would be to set the Bookmarks page as the default page to open on startup and then assign the shortcut keys to Chrome shortcut by going into settings.
Step 1: Open Chrome and go to this page:
chrome://settings/onStartup
Step 2:
On the right side, select this radio button: "Open a specific page or set of pages"
Step 3:
Click on "Add a new page" and add this in the textbox: chrome://bookmarks/
Step 4: Save and settings and exit the Chrome
Step 5: Search for Chrome in Start Menu, right-click on it and select "Open file location"
Step 6: That will show you the shortcut icon, right-click on it and go to Properties
Step 7: Put the cursor in Shortcut field and press CTRL + SHIFT + O
Step 8: Save it and exit
Step 9: Press CTRL + SHIFT + O
Let me know in case of any further assistance is required, I will be glad to assist.
Thanks
Bhavik