gx620-01US Overheating

I have had this laptop for about a year now and I starting noticing it overheating while gaming or using the HDMI port to a HD TV to watch movies. It does not shut down or give me any warnings but everything starts stuttering or there is a massive fps drop. The gpu temperature can reach 100c while under heavy load and the cpu temps read 70-80+ under the same load. Idling around 56 for the gpu and about 40 for the cpu cores.

What I did was take the bottom plate off and used some of that canned air to dust out the fan (looked like I was breaking up a dust bunny convention) and the idle temps dropped about 10c for the gpu and 6-8c for the two cpu cores.

I really want this laptop to stay rather cool considering I have a little over a week till I go back to College and I will be on the top floor of a seven story building (it has air conditioning but if it is anything like last years it is not very good). I don't need my laptop overheating when I am there so I need some opinions on three things.

1. Will changing the thermal compound help? I have some arctic silver and some OCZ Freeze lying around but it looks like they have some pretty thick thermal pads on everything and I am worried about the heatsink having a gap if I replace them with compound.

2. Has anyone successfully undervolted one of these? Would it help? When It was overheating I looked around the bios for some fan controls and noticed a distinct lack of pretty much all the options usually there. Looks like there is no options overclockers can use and I'm not sure if any of the usual programs will work.

3. Any recommendations for a good laptop cooling pad? I have a cheap one I found at best buy that seems to work alright but isn't anything special (although it has 4 usb ports so it doubles as my usb hub).

Picture: http://i.imgur.com/73fSV.jpg Sorry it's blurry. You can see the thermal pad sticking out around part of the heatsink.

 

I have a GX740, and the ZALMAN ZM-NC3000U has been working wonders for me and my cooling needs.

As for points 1 and 2, I have yet to try those options to reduce my laptop temps, but there's several post which talks about those options in the MSI forum.

 

I think there are thermal pads on the vRAM and northbridge.
So you should replace the paste on the CPU and GPU, but keep the pads where they are.

Depending on the condition of the pads, you might want to buy some new ones.

The cooling on the GX620 is good for a notebook with a 9600M.
It should idle around 45C and max out in the 70's.

 

That Zalman cooler is one of the ones I have been looking at; someone I know with an ASUS swears by it.

The pads look fine and so far everything is staying pretty cool so I'm just going to change the compound if the ambient temps where I'm going mess with it. GPU maxes at 66c now with the cpu cores between 40-50c. Idling the gpu is 43c and cpu cores are between 25-30c.

Thanks for the responses!