Recently I am facing a problem. It all started when I was surfing the net. Suddenly the monitor goes black, Keyboard off, mouse off but the CPU light was still on and all the fans were spinning. I tried to restart and after 2 or 3 attempts it started. Then the frequency of this kind of sudden black outs increased.
Now when I am trying to switch it on, the CPU light starts, mouse and keyboard flicker once and goes blank,no display, CPU fan and graphics card fan spins in a speed lower than normal as if they are not doing anything.
I have taken case cover off and blew out dust.
I have taken out the RAM and tried to start the MB. It started with 3 beep sound.
I have taken out the video card and reinserted properly.
As far as I know about machines, I guess its not the problem with the graphics card as the mouse and keyboard is also not working. And yes, the DVD R/W is working fine when the CPU light is glowing. I mean the DVD tray is coming out when I am clicking the button.
MotherBoard: Intel Pentium D CPU 2.80GHZ D946GZIS
RAM: 2+1 GB DDR2
HDD: 1 TB
Graphics card: NVIDIA Geforce 9400GT 1GB
Mouse: USB optical mouse
Please please let me know what is the solution.