I had this happen to a Nexus 8 (which is the same, basically), though mine would not show files from the PC. I could see enough on my screen to know it was booting, with weird lines and shapes changing as it did so.
But I was able to see the screen output on the HDMI output. So I connected a regular mouse to the USB port and went into the backup/restore section of settings and there is an option to reset it to factory.
Upon contacting the reseller, I found they would exchange the unit for $40 if I shipped it back to them. That is more than half what I paid for it.
So then I decided to explore fixing it myself. To replace the screen and/or digitizer is very intricate. The digitizer alone was about $20 on Amazon.
There is a very detailed Youtube video on the process. I suggest you watch it and decide for yourself what you want to do.
After watching that video, I canceled my order for the digitizer and never even looked up the price for a replacement display portion of the screen. It wasn't really beyond my skill level, but I already didn't like the memory limit and decided to look around for other options.
I put it in a junk box then bought a refurbished 10 inch RCA Viking Pro with 32GB and 1GB Ram, from Walmart, for about $80 or so, then a nice soft black carry case with a handle on Amazon for about $15, and have not looked back.
In the end I am glad my Nexus broke. I could still use it with a mouse and HDMI if I wanted it, but at least I got my personal info erased from it, and all my personal apps and settings came right back from Google onto the new device. I use my phone as my Google Authenticator for the 2FA security.
The Viking Pro (with the keyboard) is so nice it was worth going through all that. It is 10 times the machine for just a few dollars more than trying to cobble together a fix for a broken one. What really makes it shine is the full detachable keyboard. It is not a cranky bluetooth keyboard, either. It has a back button and a screen-off button, and it does copy/paste and all the other control characters just like my desktop - (and that makes it work much better for Lastpass - without the paste function you might as well not even try to use it, and there goes your security).
The carry case is what really makes it work out well. I can still carry it to church and use it as my Bible. One more thing: superb battery life, and easy access to airplane mode when you want.
--EDIT: More info based on comments:
Here is the video: https://www.youtube.com/watch?v=t2O5Dt1ITD0
Here is the Viking Pro: https://www.walmart.com/ip/134784177
Here is the carry sleeve: https://smile.amazon.com/gp/product/B00HJCUBZ6
Another interesting development: Since it has so much memory I was able to get my Google Voice running on it, and there is an app that allows it to make phone calls and do SMS messaging via WiFi with no voice or data plan. All using my Voice number which rings on my home computer, the cellphone and the tablet. That alone has saved more than the unit cost.
Plus, the sleeve has a pocket in which I carry my phone for authentication.
That 32 GB storage (plus the 32 GB SD Card) makes a huge difference. It integrates well with Google Drive and with EF Explorer I can move things around however I want, including some fairly large videos, so I don't have to play them directly from Drive. And Netflix allows you to download Netflix Originals onto the card, too. All in all, it makes me wonder why I bothered with the Nexus in the first place.