Help optimus one dead as a stone


Hi everybody,
my second post in this forum and already got a tough nut to talk about. My optimus P500 as served me well over the last one and a half years but a couple of days ago it was stuck in fastboot mode when I switched it on. Causality very unclear, I did not attempt any dodgy stuff, reboots. updates or whatever. Hard reset and emergency mode combinations do not work.

I know there are hundreds of posts on this topic, on this forum here as well (seems to happen to quite a few people) and I`ve probably read and tried out half of them. However I can not get it to work again. This is because my computer does not seem to recognize the phone any more (yes, I