No Display - Blank Screen

System Specification:

Intel 865GBF
Intel Pentium PIV 3GHZ
512MB DDR
MSI GeForce Nvidia FX5200 TD128
80GB Seagate SATA
Samsung Samtron 15inch Monitor

OS: Windows XP SP2

Hi,

I connect my PC to TV through S-Video (MSI GeForce Nvidia FX5200 TD128).
When watching movies, sometime (now more often) the signal to the Monitor and TV
goes-off. But the CPU is still on. i.e. I can hear the movie audio in the home theatre
But there is no signal to my Monitor and TV. My monitor just blinks...

Once I get this problem for the first time then it keeps on coming...
Dont know what exactly th probelm is...

In order to understand the problem...

- Removed Norton antivirus corporate edition 7 ... still it happens
- Removed Windows XP SP2... still it happens
- Tried all Nvidia drivers from the origianal site... still it happens
- Tried even Nvidia driver WHQL passed... still it happens

I read from a site if the refresh rate between the monitor and the tv doesnt match...
problem like this may happen... Even I tried that... setting the refresh rate both
Monitor and Card to 60Hertz. But still it happens...


So please someone help me or guide me what to do to rectify this... and enjoy my DVDs
watching uniterrupted...

Thanks in advance...

Cheers,
John