Hello, I opened up my 15" MBP '11 2.2ghz and replaced the thermal paste between the GPU/CPU and the heatsink. I had just removed the battery cable from the logic board & noticed that I didn't have my ESD wristband on. I FREAKED OUT. I quickly put it on and resumed the reapplication process. While removing one of the screws that held down the logic board to the unibody, I sort of flinched and the screw rolled about a cm over the logic board. Sort of freaked out again. On first boot I got a message saying the clock was set to a date before something 2008 (don't remember exactly). Read online I could solve this by resetting NVRAM/PRAM, and did so. Since then I haven't run into any problems, but am afraid that I may have inadvertently damaged my logic board. Can anyone chime in? First thing I did after removing the backplate was remove the battery cable. Thanks!