HP/Compaq :: DV6563CL W/ Win7 64 BitFan LOUD At Start Up Or After Sleep- Maybe Nvidia Driver Related

Laptop: DV6563cl (Intel Core 2 Duo T7300, 3GB RAM, 500GB/7200, 15.4 inch, Win 7 RC 64bit, 128MB 8400m GS)

I recently bought a 500GB/7200 RPM hard drive to my laptop and I decided to install Windows RC 64 bit. Before doing the hard drive update, I had installed the 7 RC 32 bit since it came out.

Now, I can't recall when I had the 7 RC 32bit that the laptop's fan was running on full blast after sleep/stand-by. It is also loud when you start-up the computer from a restart or after a shut-down. The fan speeds down to a quiet speed/rpm after...I'd say 2-3 minutes.

I installed everything listed on HP's website for my laptop (drivers and such after installing 7 RC 64bit):
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I noticed that the Nvidia driver on HP's website was not a recent one, so I hopped on Nvidia's website to get a newer driver instead (186.03 I believe).

I have my laptop set to Power saving's mode and I only bump it to Balanced when I'm doing something heavy (like iTunes encoding, etc).

I did check to see if maybe my anti-virus program that's installed (avast...AVG didn't install when I went to 64) was doing scans or such, but it isn't. Well, actually I take that back...does avast do a very slow/quiet scan in the background? I see the HDD status light blinks steady, but when I pause avast, there is not steady blinking.