+ 0 Votes Check the cable ashij 4 years ago Hi! runningbear, You probably have checked this, but have you checked if the power cable for the monitor is working? ALso check the signal cable, sometimes, one or two bent pins might cause this problem. I guess, you have already tried hooking up to a different computer, so that rules outany problem with the computer itself. Hope this helps. A + 0 Votes And her computer is what actually? OH Smeg 4 years ago While not common some systems had their BIOS Loaded onto the HDD and if that is removed the system will not start to do anything. So what is the Hardware Involved here on the system not working? Col + 0 Votes Does your monitor have twin inputs ? ... OldER Mycroft 4 years ago Using the monitor's own on-screen menu display you will find 2 inputs: Analog + Digital. Depending on which output you are using from the graphics card (VGA or HDMI) - you might need to alter the input on the monitor or the on-screen menu. + 0 Votes Are there 2 video ports? DMambo 4 years ago Windows often disables an on-board port if there's another found. If you have a separate PCI or AGP video card, be sure the monitor is connected to that. + 0 Votes RE: "hard drive works on my computer ,boots up just fine" OldER Mycroft Updated - 4 years ago http://techrepublic.com.com/5208-1035-0.html?forumID=101&threadID=319090&messageID=3181400 WHICH PC did you install XP onto the HDD from? It is most unusual for an installation of XP to boot when the HDD is removed and fitted to another different PC. So, when you reformatted and reinstalled XP onto this system, you must have had video while the installation was taking place - so when did the video fail ?? Did the XP install manage to perform it's standard re-boot? Did the video continue after the re-boot?