We host computers and servers for clients. When their machines crash we need to reboot these machines. However this is not possible when we are out of the office. I know on servers such as HP you get Lights Out which allows you to login across the internet and power cycle a crashed server that is stuck on a blue screen. Is there any hardware like a PCI card or something that we can get to do this for other computers and servers that we host which dont have lights out capability?