I originally started building my PC with a 500W PSU installed, however when testing my PC it went dead so I decided to use a PSU from an old computer. This PSU ended up working and so did my computer - it was 170W though.
When I tested my computer for the second time with the old PSU installed, I did not have my Hard drive and Optical drive yet - now I do. Despite it working without the Hard drive and Optical drive, will I be able to use the 170W PSU with them installed? Or should I get another Power supply.