Greetings. Yes, you may still return those to the store within the return period.
Since you do not have the packaging, there could be a restocking fee. It is up to the manager's discretion if you will be charged the restocking fee and how much it would be exactly. This would be determined directly inside the store at the time of return/exchange.
Submit photos and a description of your PC to our build showcase
See other custom PC builds and get some ideas for what can be done
Services starting at $149.99