Answer:
You can use your computer safely by just toggling the voltage switch on the power supply form 110 volts to 230 volts.
Explanation:
This is a similar issue to what happens with the metric system, the imperial system is used in the US as a cultural thing but it's rarely used anywhere else. The US uses 100 volts because Thomas Edison thought it would be better, while basically everyone else in the world disagrees.
Since most computers are built in China or some other Asian country, they either have an automatic voltage selector or they have a manual switch. In case the power supply uses a manual switch, all you have to do is toggle it to 230 volts.