Sony Vaio VGN B100B
1.6 GHz Pentium M 725
1GB + 512MB RAM DDR333
Some days back, my Sony Vaio laptop (model VGN B100B) screen blanked out all of a sudden.
Now the laptop does not boot though it gets power. On power up, the DVD drive spins and the indicator lights for HDD, power and wireless go on; but nothing shows on screen. Nothing shows even when an external monitor is connected.
The hard drive is fine - I removed it and backed up the files.
I tried disconnecting the power cord, removing the battery and holding down the power switch for a minute as has been suggested on some other threads (eg: http://www.daniweb.com/forums/thread41145.html ). But nothing showed up on the screen after restoring the power.
I suspect the video chip or the entire motherboard is fried.
Any suggestions on how to isolate the issue and if it is indeed the video, where to get a new chip?