I did actually put the PCI card on my friend's PC to check it.
There too same problem.
However today I obtained latest drivers from VIA for VIA VT6421 SATA adapter and then tried the PCI SATA Adapter + SATA HDD.
The BIOS check up took a half a minute.
It was getting stuck at Detecting Drives.
Then Windows got loaded as it is on my PATA HDD.
From the Login Screen, regular intervalled hang ups (comp freezes). In between the SATA HDD would rotate fast accompanied with the rotation noise associated with Restart. Then the computer would work for a second and then again freezes !
I checked my Device Manager, there was no error message for the SCSI Controller.
BUT still not detecting the HDD


