If it is currently in sleep mode, the status LED on the front panel will be yellow. Move your mouse back and forth a few times. This will usually wake up a monitor. Press any key on your keyboard. The monitor may not be getting any signal because the video card is dead. Some computers have multiple video cards: there may be one built-in to the motherboard and one connected to a peripheral slot. Connect the monitor to the other video card and boot the system: if the computer has only one video card, swap out or add a peripheral video card to the system and turn it on.
If the secondary or alternative video card works, the previously used video card is probably broken. A computer won't load at all if the memory is bad.
If the computer has more than one RAM module, boot up the computer with one in at a time. If all other components are ruled out, the screen is going straight to sleep mode because either the motherboard or CPU is broken -- discerning the cause between the two is difficult and either one is a system death sentence. Dan Stone started writing professionally in , specializing in education, technology and music. He is a web developer for a communications company and previously worked in television.
Share on Facebook. This might include one of the computers in your office turning on but not loading Windows, instead displaying a message that the monitor is entering Sleep mode. This indicates either a hardware or software issue; with a bit of troubleshooting you should be able to find out what the problem is. The benefit of troubleshooting computer issues in a small office is that you have an abundance of hardware to help you test.
If the monitor has the same issue on another computer, the monitor itself is the problem. Grab a monitor from another PC in your office and connect it to the computer that keeps entering Sleep mode. If both monitors show you the pre-Windows screens but stop working at Windows, the issue is almost certainly a software problem.
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