Abstract: Methods and systems for providing a wireless security service and/or a wireless technical support service for a personal computer. The personal computer comprises a control unit for processing information conveyed by signals transmitted over a wireless network and received by a wireless interface of the personal computer. By processing this information, the control unit may: send at least one command for execution by a power management controller of the personal computer such that, upon executing the at least one command, the power management controller changes a power state of the personal computer (e.g.