Thanks for engaging in HP support Forums! This is a wonderful location to converse with the community, get assistance and find tips! I understand you are having issues with the Apps not working on your HP Slate 17. Don't worry as I have a few suggestions which should help you resolve this issue.
I would like to know the following information to assist you better:
A hard reboot can resolve many startup issues. Press and hold the power button for more than eight seconds. After the tablet fully shuts down, wait a few seconds, and then press the power button to turn on the tablet.
If the tablet does not start, continue with the next step.