Cannot start pc

When I switch on my pc through the CPU power button, nothing is displayed, no sounds from the CPU.

Before this problem started, the last time I had my pc started properly, the CPU was making a continuous sound from the CPU(like the beep from the motherboard when the pc is started). Keyboard and mouse did not  work and the pc had to be rebooted and now it stopped starting.

Power supply to the monitor and CPU is ok as the CDROM is working.The monitor power indicator light is on and flashing.
hag1Asked:
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CallandorConnect With a Mentor Commented:
It could have been an alert in the motherboard.  The fact that your system doesn't boot anymore probably means something has failed.  You will have to open it up, and the things to check are:

- motherboard shorting on case
- bad connections
- faulty or inadequate power supply
- bad RAM
- faulty video card
- bad cpu
- bad motherboard

Strip the pc down to the bare essentials: keep one stick of RAM, the cpu, and the video card, and reset the BIOS.  Do not include hard disks, other PCI cards, or other peripherals.
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CallandorCommented:
When the beeping was going on, did you check for messages displayed on the monitor?  Usually, these alerts are because something is not plugged in, like the keyboard.  Did you check if everything is connected firmly?
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hag1Author Commented:
When the pc had started for the last time, the beeping was going on, no error messages were displayed, the desktop screen was displayed properly.

Now,no sound except that from the  CPU fan can be heard.Keyboard,monitor,CPU,printer power cables are firmly connected.
I will check all other cables.
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hag1Author Commented:
All cables are firmly secured.
Now, am I supposed to open the CPU?
Doesn't this sound like a motherboard problem?
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hag1Author Commented:
Okay, I will open it, probably in a day or two.

Could you please provide links to info about resetting the bios and other hardware details I must know before I open the CPU?
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hag1Author Commented:
Was the beep  an alert and not a malfunctioning of something?
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jrusselltc100400Commented:
What is the name and model of the motherboard that the system is using?  
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CallandorConnect With a Mentor Commented:
Just so you know where everything is, here are some articles about building PCs:
http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_3734_4348^1065,00.html
http://www.mysuperpc.com/

Resetting the BIOS involves moving the CMOS jumper from the Normal position to Clear, and back.  If you don't know where the jumper is, remove the CMOS battery (that coin-shaped thing with a + on one side) for about a half hour.

Beeps are usually alerts and warnings, but they could be alarms indicating something important is missing.
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hag1Author Commented:
Mercury motherboard KOB 845GL NDSMx with Intel chipset
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hag1Author Commented:
I found this in the faqs at my motherboard site. (http://www.kobian.com/su_fm.php#3)
____________________________________________________
What do beep codes mean?
 Beeps codes are the audio beeps that the mainboard will output when your system has problems. Generally they are used to identify booting problems. Below are some basic beep codes and their possible meaning:

One long and 3 very short beeps
- Problems may be related to video part

Continuous beeps
- Problems may be related to memory part

No screen and no beep
- Problems may be related to CPU part
____________________________________________________
 
So, do I treat my case as 'continuous beeps' or 'no screen and beep'?


Callandor, I am trying to understand the motherboard using the links.

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CallandorConnect With a Mentor Commented:
You have a case of continuous beeps.
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hag1Author Commented:
I opened the cabinet, cleaned the RAM and now the pc is back to normal.
Thanks to you, Callandor.
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CallandorCommented:
That's great - glad I could help!
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hag1Author Commented:
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