hongmi turns off when usb plugged in..

for some reason when i Plug in either usb or plug charger the phone turns off.

if i turn it on again it either turns off as soon as it boots (while cable still connected) or stays on for a while then eventually reboots...

tried full wipe and flashed rom again although the same occurs... when it didnt use to do this with the same ROM... I am using the miuiandroid_multi_HM2013022_TD_JHACNAL5.0_jb-4.2.zip


help is much appreciated!!