|Not exactly sure if you really need the new power supply, though it could very possibly be the cause. Look into your BIOS set up and see of the voltages reported are withing 5% of their nominal values (5V= 5Volts +/- 5%, etc.). If it is not, then definitely replace it.|
AS far as the voltages, the voltage out of your wall is nominally 220Volts regardless what the power supply is marked. One company chose to mark their product that it would function up to a maximum of 230 Volts while the other company decided to report that their power supply was intended to operate at the nominal voltage of 220Volts as opposed to North America's 120/110Volts. Either the 220V or the 230V will work the same for you. It is more important to get a quality product with the same ratings or higher than your original. Look for power supplies that are:
A quality name brand
Has 80% certified efficiency rating or better.
Has active PFC.
Has a single 12 Volt rail rather than multiple ones.
Has enough power to run your system and margin to spare for upgrades like a better video card.
Look at Amperage, particularly on the 12 Volt rail since this can be more important than overall wattage in powering high draw components than overall wattage (which can be faked by pushing up the amperage on the 5V & 3.3V rails since this is easier, cheaper, but useless to you).
Has high consumer recommendations on online sites.
You have to be a little bit crazy to keep you from going insane.