Hey, I have an Xperia Pro (MK16i) in my hands. It doesn't boot fully, it passes the splash screen, the boot animation and then it gets back to the splash screen and this keeps repeating. I checked whether it boots into Fastboot and flash mode and thankfully enough it does, except it isn't recognized by the PC. I have a Laptop with Win 8.1, Dual-booting with Ubuntu 13.04 and another laptop with Windows 7. I tried everything, drivers, editing the rules file but unfortunately, none of this helped. Also, I have this feeling that USB Debugging is off. It'd be great help if someone replied with any ideas.
PFFFFFFFFFFFFFFFFTTT, sent from my i9000