Hi, I'm on my second sp4 after my first died completely (just stopped powering on). Yes I tried all the methods to reboot it. Its just died. Anyway... Yesterday my new sp4 (which has backlight bleed in low light unlike my first) decided not to power on. No response. I plugged it into power after a little it came on..the battery was half charged. Another thing is while charging the battery often pauses charging says not charging then after a few minutes resumes. It always does get to 100% but seems to pause quite a few times. Anyone else experience that? Is it normal? I just installed the 17/02/16 updates so hopefully its just a software issue and not the hardware again.