If your are trying to find out how much power your computer needs you can use a calculator.
Calculators are not 100% accurate, so only use them as a suggestion.
450 watts is great for your system. Because you have no GPU listed I assume you are using an IGPU.
If you get a GPU you will have to see how much power it pulls before you pick a PSU.
If you are having a problem with your Display Drivers try this.
If your are trying to find out how much power your computer needs you can use a calculator.
Calculators are not 100% accurate, so only use them as a suggestion.
450 watts is great for your system. Because you have no GPU listed I assume you are using an IGPU.
If you get a GPU you will have to see how much power it pulls before you pick a PSU.
If you are having a problem with your Display Drivers try this.