Thread: The computer starts but the monitor does not!. What should I do?

Hi everybody.
Today I decided to clean my computer box as 1 year that did not. After doing so note that the plug all the winch and turn the machine the monitor flickered but the screen was black. Monitor grabbed my other computer and took him to prove it and spent exactly the same, not only that but to put it in your original computer same thing happens to the other!.
I really do not know anything about hardware and not to do. I noticed several web sites and can not find solutions.
A separate data is that prior to cleaning as an alarm sounded inside the box .. Does it have something to do?. On the other hand, as soon as I turn on the computer you hear 3 beeps when you start .. the same people were doing when the computer started this last month.

vCheck and make sure the correct connection of the different components of your system, specifically the ram memory modules, change this slot, correct position of the jumper on the motherboard, VGA if you have

If you disarm the system also checks the correct position of microprocessor ...

The three beeps means a problem of memory, parity, graphic problem or motherboard

As I mentioned a good friend**should check all connections again, remember also that if you have installed video card, you must connect the monitor to this and not the motherboard.
*

It seems to come for discussion of computer science and what to ask experst that are clear to you? There is no way to ask for things without seeming requirement kindly to demand Take your machine to a technician you have to pay and that if Demand that you want, you're paying for it.

Wonder if the second monitor in its original machine was working well before you made the test on that machine co nel.

If these 1000% sure it was working fine prior to the test in detail the machine, then the graph is throwing you a joke with the transmission to the monitor.
If you have a third try it in the machine