use UK 240 volt pc in Japan 100 volt

Hi everyone,


thanks in advance for any advice,


this is more an electrical issue rather than a computer issue, but hopefully someone can help??


I brought my HP desktop with me from the UK to Japan.


Its a HP Pavillion t3777 uk model.


UK uses 240 volt AC ~ Japan uses 100 volt AC


The label on the back of the CPU box says:


A/C input 50/60 hz


100-127V ~ 6.0 A
200-240V ~ 3.0 A


Which makes me think it should work OK


but next to the power cable socket there is another label that has a warning triangle and says :


230V HI-POT OK


All I know is that when I plug it into the mains in Japan nothing happens.


I think there are 2 options - get a step up transformer or change the power unit inside the cabinet.


I was wondering if there is some sneaky switch anywhere that flips it into Japanese power mode ??


Many thanks,


Rumi