Here are a few troubleshooting tips for that issue.
1. Do you have a video card installed? If so does the cpu have the drivers for said video card installed?
2. Are you trying to run the monitor from the integrated VGA port? Is your Bios telling the CPU to load display from a different setting than default?
3. Is monitor powering on? If not, is power cord fully inserted?
4. Are all cables connected as they should be? Pushed in and screws tightened?
Check first RAM of your computer seated,try another RAM.If still their is problem then check graphic card of your system.If your issue till not solve then check Mother board and processor.
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The CPU will always do processing. Even though there are no application programs running, the operating system is still running and the CPU will still have to process many system processes during the operation of the computer.
It could be that you are running something that causes the CPU to be running at 100% all the time, or you have concurrent apps/processes that are keeping the CPU awake (same effect as the CPU running 100% all the time).
If the CPU is running, but the monitor has no signal, there could be an issue with the cable that connects the CPU to the monitor. There could also be a problem with the VGA card, or the RAM.
Time of CPU usage per minute, Number of processes running at once
After the system is up and running you can check the CPU and motherboard temperatures by entering setup?
Operating System
If you hear a long beep sound with no display from CPU.
It depends on the exact CPU, if you are running it according to rated speed, and if you adequately cooling it.
It does. You need a mini-display to vga or mini-display to hdmi adapter to do this though.
PS would be the simplest and fastest way. top will display processes, along with memory and CPU usage, so it is more useful in identifying runaway programs.
My PC is running the 3.0 Ghz Core 2 Duo from Intel. - PageFault