My monitor will not display anything other than a "Please check signal cable" message before it goes on standby when I start up my computer. I've tested several different monitors, which leads me to believe it's some sort of hardware failure. The only problem is, I'm not sure what piece of hardware it is. I don't have another computer that I can switch parts with to see if it works, so I don't know how to determine which piece of hardware I need to replace. I don't have enough money to replace everything, or else I wouldn't be posting here.

I'm also confused as to why my hardware failed. It was working fine one night, I turned it off and went to sleep. 5 hours later when I woke up, I turned it back on, and nothing would display. I didn't have any animals in my room to mess with it, nothing was moved, and nothing changed. It just all of a sudden stopped working. There weren't any symptoms that would suggest hardware failure either. Any help would be GREATLY appreciated.