The technology you need is called KVM over IP (out of band service). Basically it is a hardware solution that can work the keyboard, mouse and monitor through the internet even if the computer's Operating system is locked up or you need to flash update the bios or just make bios level changes as if you were sitting right in front of the keyboard locally but really are half way around the world. I once had a isa card setup that did this, but it stopped working once the pentium era came about and at that time my remote needs were not that extreme, but I find myself once again searching for the best cost best solution for moder servers.. So far I found that [Removed by Moderator as per community Guidelines - TeamViewer only please] will work if you have a bunch of remote pc's to manage at this level.
... View more