Rebooted Comuter Now Monitor Won't Come On.

Make sure both the power cord and the cord running from the monitor to your tower, are both securely plugged in, and that your monitor is turned on. Try unplugging everything, including your computer from the power source, and plugging everything back in and see if that helps. If that doesn't work and your computer seems to be running fine, but the monitor won't come on at all, there may be a software glitch not allowing the computer to recognize the monitor. I'd definitely attempt plugging and unplugging, and then dimming the lighting on the monitor if you can at all, because sometimes that is an issue. If all else fails, if you have an extra monitor around, or can borrow one, check to see if it works properly. If it does, then you'll know the problem is with your monitor and you can purchase a new one. If it doesn't, then you'll know it's probably a software problem and may want to look into taking it to a computer store to get it checked out. Good luck!