Just recently my P605 has developed 2 rather serious problems. The first is that my PC no longer recognizes the tablet, when I plug it in, nothing happens at all, no USB device is detected, nothing comes up on the tablet to say USB connected, it just starts charging. The second problem is it keeps stopping charging. Just this morning it was stuck at 22%, it would charge up to that, then the battery icon would not show it charging anymore.
Through continued switching on and off, it's charging up, but seems very irregular. I've left it switched off on charge now to see what happens. I've ordered a replacement USB port for the tablet wondering if somehow I've damaged it. I've also cleaned the socket out to make sure no fluff was stuck in there causing connection problems.
I've tried the tablet plugged into different PCs/Laptops with different cables, still no USB connection . I've also tried a new ROM, reflashed a few times (which was a PITA) as I had to download via dropbox as I couldn't find my SD card adaptor lol.