HP Pavilion a450n PC Desktop "keyboard back light wont work" Questions

...back. Please help Unplug the power from the outlet for about 5 minutes then try it. Disconnect all USB devices with the exception of the keyboard, mouse and video, if it boots, connect one USB device ...

...back of the CPU(look for the keyboard led & optical mouse lights up or not. Also open the side panel & see if the JEDD lights up on the motherboard, this will ceckif piwer is coming to the MB ...

...keyboard, mouse and monitor, I unplugged the pc then pushed the power button. I plugged it back it, and still nothing. It sounds like it is doing something and the little yellow light at the bottom ...

...back to the factory default settings.Keyboard plugged in, USB mouse plugged in, plug the computer back into power. WAIT 1 minute, turn the computer on.Still no?Motherboard replacement.You didn't ...

...keyboard. I emphasize might. Try this though: Remove the power cord from the back of your PC. Leave it out for a minute or so. While it is unplugged turn your keyboard over and strike the top of the ...

...back in the keyboard. and an alternate method : Alternate Method Switch off the machine and disconnect the keyboard. Turn the keyboard upside down and remove all the screws. Lift the top half of the ...

keyboard lights flash when I turn the computer on but will not work when I push F1 or even any other button. Please help.....oh I dont have a reboot cd.........Thanks make sure you unplug the computer

...back to repair. This chart is where I got my conclusion. Power Light Problem Description Suggested Resolution Solid green Power is on, and the computer is operating normally. On the desktop computer, ...

...back, (possible pre-BIOS failure??!!). Had the computer open all afternoon before this happened. Wanted to install a new heatsink fan assembly, but Dell sent me one missing the 'thermal grease'. So I ...

...back of the system by where the keyboard plugs in? There are is a row of 4 lights; either yellow or green. If the systems gets stuck at a particular post location, the lights will tell where. Good ...