computer doesn't start

All of sudden my computer doesn't start. Last when computer booted I have selected win98 (since it has dual boot), it was struck in win98 load screen, then I power off the m/c and power on. when I switch on fraction of second it stoped.
I didn't see any signal to monitor. No beep.
No error message. I have checked power - seems to be OK, CD tray opens. Something happening before system boots.
I have opened the box and checked for any lose connection, everything is properly connected.
It is Sony VAIO Minitower, Pentium II, 333 Mhz.
Dual boot of Win95 & Win2K.
I don't know what could be the problem. please advice me.

1. RE: computer doesn't start - no beep
lbyard Jun-29-01 10:29 AM
In response to message 0

Is it powering on a fraction of second and then going absolutely dead as you seem to indicate in the first part of your post? If so, I am confused because you say the CD-ROM drawer opens. For starters, pull and reseat the memory. Please use antistatic procedures: http://duxcw.com/digest/Howto/buildcom/socka/4.htm. Larry

2. RE: computer doesn't start - no beep
blck_dragon Jul-05-01 07:58 AM
In response to message 1

The computer not booting can be caused by any number of hardware not working properly...
It is evident that your system is receiving power due to you being able to open your cdrom drawer amongst other things.
If you've tried reseating your RAM and it still does not boot, check if your heatsink is running and if your hard drive is initializing. If both are running fine, try reseating your CPU.

3. RE: computer doesn't start - no beep
moesdeal Jul-05-01 12:15 PM
In response to message 0

After reseating everything (CPU, memory, video card, power connector, etc.) if you still only get a flash of power then pull the power to the cd-rom, hard drive and floppy and remove all cards except video (with the power cord disconnected) and then attempt to restart. If you get nowhere further in the boot processes my money is on the motherboard or CPU. If it does attempt to boot, then shut it down and plug in the hard drive. If it dies at this point the hard drive is the cause. If not shut down and plug in the floppy and test then the CD-rom and test. By doing these one at a time it will eliminate them as possible causes.