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VGA no signal means "no signal" from the computer on the VGA (blue plug) cable... ...if the computer works check the cord for loose connection or get a new cord...if the computer is hooked to the digital cable (DVI/white plug)...set the signal source on the monitor to digital...
Without seeing your make or model on you monitor it is difficult to give you any advice. But with that said.. If your monitor is a flat screen there is a power cord that plugs into the wall the cord is connected to a small box (power converter) out of the box is a small connector that goes into your monitor. It is small and you may have to turn you Monitor over to see exactly where it connects.
Your computer will work whether or not you have Internet service.
Sounds to me like the power board may be bad on that monitor, espeically since it made funny sounds and usually bad transformers will make those types of sounds.
Make sure you don't have any bent pins on the vga cable and also hook up the monitor directly to a wall outlet to be sure a surge protector isn't causing problems.
Now hook up the monitor and also make sure your computer is turning on and booting up cause if the computer is not running properly then that could cause no video as well.
If you still have no video, then go ahead and hook up a known working monitor to the computer, if you get video with this monitor but not the original then you know that the original monitor is bad. If the new monitor gives you the same symptoms then it could be a problem with the video card or motherboard issue if your not getting any video from the computer at all.
Looks like you need to purchase a new monitor. If it's too worn out then it's the outcome. I also had the same problem before and I ended up buying a new one. You should not experience that thing if it's new.
Not at all - as long as there is a VGA connection (analog) for the monitor, you're fine. Make sure that if you have a video card that you set your bios to automatically send the video signal through the card (where you'd hook your monitor cable to).
In some cases, if you have a video card, (and you're connected to the VGA output from the motherboard), the signal is bypassed and trying to go through the card automatically. If there is no card, disregard this last paragraph.