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You should check if the vga cable is tightly connected from monitor to cpu. If the cable is connected properly,then the problem must be with your monitor. Check with any other monitor. If you hear a beep beep sound, when you start the computer then your RAM has been damaged or not properly connected.
If you mean a constant beeping, open the case and see if the CPU fan is running, check also that the heatsink is firmly attached to the board, this noise usually points to a n overheating CPU, if you get no activity on screen,it is because there is no signal being sent to the monitor. Do not operate the computer until you have checked the fan is working, you need to establish if there is power getting to the fan by testing with a multimeter on the motherboard cpu fan pins. If you are getting power, replace the fan, worthwhile removing and regreasing the CPU and making sure it is firmly in place.
If there still is no signal, replace CPU, but also try a different graphics card (faulty video will give 9 beeps).
please check on cables connecting the monitor to your tower/cpu. make sure both ends are plugged in tight. check on the monitor power light aswell, if its blinking or not, if the monitor has been more than 5years old too, its possible thats already dead computers have a life time too especially the old models.
that is the problem of cpu not a monitor to confirm disconnect signal cable and power on. monitor will show "no signal check signal cable" it means that monitor is ok and fault lies in cpu .then open the cpu and disconnect ram and listen the beep. contineus beep should be heard then ram is faulty replace it. if no beep heard then motherboard is faulty .
Please check your plug if it is plug in properly or firmly. Locate the switch and turn it on again. If stil persist, try to inspect whether cpu is beeping while turning on. If its beeping something is wrong in your cpu or monitor depending upon the beeps.
I turned on my computer and the monitor displayed this message on the screen "going to sleep no input received". I checked the power cord and unplugged it, nothing. No lights are flashing or beeping sounds. The CPU is working just fine, anyone have any idea what to do
The 2 extra wires will most probably be temperature sensors.
If your using the onboard video, then make sure you have memory in the first DIMM slot (it will say DIMM1 beside it)
If that dosn't solve the problem then try these:
Remove the memory and reseat it. Make sure to put it back in the correct way. There is a notch towards one end that will match the notch of the memory slot. Press it in until the 2 clips lock fully, then give it a gentle wiggle side to side while pushing down still.
Listen to the beeps your computer makes when starting up. A single short beep is what you want to hear. If you hear. If you hear something else then post back what it does. There are long and short beeps that could be involved.
Disconnect all the IDE cables from the back of the drives. You can leave the power cables connected. When they go back in they also have a notch and can only go in one way.
Try those for a start and post any progress you make. Also just double check the video cable is correctly attached at both ends to the computer and to the monitor.