Unable to get the display in the monitor

Could be anything, power supply, motherboard, video card. If it makes no
beeps, it's more likely power supply or MB. Call a local computer
repair shop for a diagnosis and repair estimate.

I did it too. I have tried it with another Monitor too. It doesn't work out.

My computer which was working good for many years have broken down. It
shows nothing in the screen except "THE SIGNAL CABLE DISCONNECT" when i
turn it on. It doesn't produce any sound. I have replaced the RAM in
another slot, It did not work out too. What shall I do?

you know i have gone to many repairing centers but the problem is my
village, there are only a very few repairing centers and they are not
experts at computer repairing. I have tried this in a different news
group too but they did not give me a proper reply. i have replaced the
VGA also but It remains the same

My computer doesn't turn on, then how can I change the time of the
computer. I shows only a massage "THE SIGNAL CABLE DISCONNECT"

Maybe you should try reconnecting the cable that goes from the computer
to the monitor...

Since your so remote, try replacing the video cable, as the message says it's
not receiving a video signal, or it could be something on the motherboard
that generates the video signal, and it's broke. sorry not much help, better
plan on getting a new pc.

Your problem is that your computer isn't keeping the correct time and date
and if you can correct this fault, I am sure your computer will start
operating properly.

For example the date and time on your message is "Date: Thu, 02 Sep 2010
08:01:14 +0530" Now this can only be somewhere outside the global Satellite
Orbit where time runs faster than on earth!

How did you post this message if you can't turn on your computer? I think
you should throw away your computer and buy a new one because clearly it
appears to be damaged beyond cost-effectively repaired! Computers are very
cheap these days though Microsoft Software will cost you an arm and a leg!
unless you correct your system date we shall not reply again so you are on
your own!

"Unless you correct your system date we shall not reply again" - who's this
"we" you want to speak so authoritatively on behalf of?

And as for "Your problem is that your computer isn't keeping the correct
time and date and if you can correct this fault, I am sure your computer
will start operating properly", that would be baloney even if he WERE
posting these messages from it, which he clearly isn't.

Can you check below things just to get confirmed what exactly the issue

1 - Just switch on the machine with all the peripherals attached I mean with Memory, and monitor plugged in to CPU and another in to power. (Notice if its displaying anything on monitor or not, if yes please write back)

2 - unplug the data cable of monitor and switch on the monitor (Notice what the output is, is it "No signal")