My Nexus 7's touch screen is completely broken, I know I can manipulate the device using adb commands, but debugging mode isn't enabled on the devices. Is there anyway to enable debugging mode from a PC or any easy way that wont break any files, I would preferably like to just turn on debugging mode and not have to reset the device or anything, cheers!
With broken touch screen you won't be able to enable USB debugging mode using your PC.
I had tried the adb method but it doesn't ends well, however you can try to take a backup of your phone as described in Broken screen while debug mode was disabled. How can I re-enable adb?.
Well if you are going with my Solution No Need to Backup. Since Nexus 7 supports OTG (On the Go) connections, you can always connect your Mouse/Keyboard/Secondary Storages using your OTG Cable.
So try to Connect your Mouse using the OTG cable available for your device, then Go to your Settings and Enable USB Debugging mode.
That's all. Hope it will Help.