Hi Fbjemsbond,
I understand you are getting a black screen and your caps lock button and WiFi are flashing. Here is a document on Restoring Windows. You can restore it to a previous time when it was working correctly.
I would be happy to assist if needed. Please let me know what is your model number and your current operating system? Here is a link that will help you find that out.
Please let me know.
Thanks.