Lumia 625 bricked with red Nokia screen or won't turn on

A Nokia Lumia 625 failed to reload the system with the Windows Phone Recovery Tool 1.0.4 (released earlier in 2015 I think). The 625 had a Nokia screen initially but wouldn't respond to anything, or turn on, or recover using any of the Microsoft or Nokia tools. Completely bricked.

If connected to a computer it appeared as an unknown device QHUSB_DLOAD. I took it to Nokia Care and they couldn't do anything other send it back to be looked at - but I needed proof of purchase (even though it showed in their system as still under warranty - however it came from ebay)

The good news is that can now be recovered. The latest version of the Windows Phone Recovery Software is 2.1.1. Spotted the phone right away, warned to charge the battery above 25%, then reloaded the system. Only took 10-15 mins, and the phone is back! De-bricked. Un-bricked. Whatever the word is.

https://www.windowsphone.com/en-gb/how-to/wp8/phones-and-hardware/recover-my-phone

Reclaim lots of disk space from Microsoft Zune / Windows Phone .tmp files

The laptop just shouted about having low disk space, only 100MB remaining. So I started poking around to find out what I could free up - really didn't expect to discover that a big culprit was Microsoft Zune.

Zune was using around 15GB for its Transcoded Files Cache - consisting of 5000+ .tmp files. You can find this folder in
C:\USERS\username\APPDATA\LOCAL\MICROSOFT\ZUNE

Select All (Ctrl-A) to highlight them all, then Shift-Del to permanently delete (bypassing the Recycle Bin).

The files have come from a Windows Phone being connected and syncing media files between laptop and phone.