Once an order has been placed with pcRUSH.com, the ability to cancel or modify it depends on the status of the order at the time the request is made. Generally, if an order has not yet been processed or shipped, customers may have the option to cancel or make changes. However, once an order is in the processing or shipping stage, modifications become increasingly challenging. To obtain accurate and specific information regarding the cancellation or modification of an order, it is advised to refer to the current web page where detailed policies and procedures are outlined. This way, customers can become familiar with what actions are allowed and the steps necessary to proceed. If further clarification is needed, browsing through the customer service or support section may provide additional insights.