Upgraded HDD - When resuming from Sleep mode, BSOD and restart occurs

[I posted this earlier in the Crashes and Debugging section, but we think this is a hardware problem:]

Hey there,

I recently upgraded my notebook hard drive from a Western Digital WD2500BEVT 250GB to a SAMSUNG Spinpoint M7E HM641JI 640GB hard drive (and "cloned" from the old to the new). The only problem since the switch is when I resume from sleep mode. My laptop goes into sleep mode fine, but upon resuming, it correctly shows the log-in screen (there is a password on my account) for a few seconds, then proceeds to show a BSOD ***STOP 0x000000F4. Upon restart (I am forced to press the power button), the computer shows the error recovery, unexpected shutdown screen. I have looked in my minidump file folder, but no recent dumps show up, so I am not attaching the file. The event logger shows many errors, including Kernal-Power event ID 41.

I have tried playing with the sleep settings (hybrid sleep, etc.) in the Advanced Power Settings with no luck. Drivers are all up-to-date. With my old drive, the moment I woke the computer from sleep, I would be able to log-in and resume where I left off almost instantly.

I attached the Event Viewer log in a .zip file, if that would help somehow.

Windows 7 Ultimate x64 Retail
Hardware and computer approx. 2 years old (Samsung HDD is new)
Last OS installation approx. 6-8 months ago (Old HDD was "cloned" to the new 640GB HDD)
System Health Report passed with no errors

Gateway T-6836 Laptop
Intel GM965 chipset
Intel Core 2 Duo T5750 @ 2.00 GHz
4GB Memory
Intel Graphics Media Accelerator X3100

Thanks,
Shane

Any ideas why sleep mode no longer works once I upgraded from a 250GB to a 640GB hard drive?

Thanks