What SATA mode do you have set in your BIOS (IDE, AHCI, or RAID)? Also, are your chipset drivers up to date? I suggest you go to intel.com and download and then install the latest Intel chipset drivers for your flavor of Windows (x64). Don't just go with the generic Windows 7 drivers. Link is below:
Oops, I missed the PATA vs. SATA info in your first post. Regardless, going with the most current drivers won't do any harm (and could help). You can also check in your BIOS to see what IDE mode you are running in. You should be an a DMA mode and LBA, not sure what selections you have to chose from, but with OEMs and laptops (in general) your options tend to be very limited. Still you should be able to operate at the highest (least common denominator) speed that both your SSD and laptop can support. In your case, that should be ATA100.