Hi guys, it's my first post so please be gentle. I have the above mentioned player and for days had problems with "Logon Failed". Spent hours searching around here and across the net. Its networked by wired connection to my XP PC. In the end I decided updating my software was the best option to try to solve this, after checking and re-checking I'd correctly shared the offending external HD connected to the PC. Unfortunately, for reasons I can't explain other than my own stupidity, I updated with a Cyclone MKV player instead. Now, when I turn the player on, all I get is the Sumvision loading screen, then it goes blank. My TV then reports "No Signal". I tried updating with the correct Live firmware, but to no avail. I don't think I've bricked it, because of the loading screen. But, please, if anyone could help I would be extremely grateful. It was an excellent player before this problem and my lack of brains.