Sony no longer hosts these officially, but you can get verified 64-bit drivers for the PCG-61A11U (check motherboard ID: ):
The PCG-61A11U is known to use an .
This driver optimizes hard drive performance. sony vaio pcg-61a11u drivers windows 7 64 bits
Finding drivers for the can be confusing because " PCG-61A11U Sony no longer hosts these officially, but you