Note to ALL LAPTOP USERS:
Your system is like a pc, except you know, easier to move. (I can hear the Duh!s already) Well, like computers, they are dust magnets. Unlike the spacious case your pc has, your laptop is pretty crampt. You're collecting the same amount of dust in a smaller area.
Dust is bad. Very very very bad! It is disrupting the flow inside your case causing internal components to to heat up faster than they should, and if kept unchecked, will eventually overcome the case's ability to cool components.
If your fan spins up for any reason while idle on a regular/nearly-regular interval, you MUST clean your laptop as soon as possible, your motherboard is at a severe risk of being damaged.
Sager is pretty strict about disassembling your laptop completely, so you have three choices on cleaning your case, all with variable effectivenesses on cleaning your case.
1. Simple fan blow: Using a can of air, blow into the fans (minding not to have the fans spin too fast so that they whine and break), in all possible directions.
2. Bottom cleaning: Flip over your laptop (place screen hanging off edge of table to prevent damage to lcd) and unscrew all bays on the bottom of your laptop. Remove the battery, then remove the hard drive (you don't necessarily have to disconnect it, just make sure you can blow underneath it), and blow off all components and blow as much as you can underneath the casing, being careful not to poke/pull any components). Reconnect all devices and casing when your done.
3. Keyboard cleaning: Granted this one is a bit more difficult to do than the others, it is possible (although I don't think sager cares much for this method). Along the gray dash portion above the keyboard, there are 3-4 latches that the keyboard hooks under, Using a thin blade you can push this slightly back (careful not to push too far, you can break it!) and the keyboard will (more or less) popup a little in that area. Repeat on all the other clips. If they keyboard did not lift on the top edge anywhere, pry it up VERY GENTLY keeping an eye on the clips by one of the corners. It may stick a little, but it should get loose. pull back the keyboard a little so that the 1cm teeth under the bottom edge is free from the case. but DO NOT ATTEMPT TO PULL KEYBOARD ALL THE WAY OFF, there is a ribbon cable! Lifting the bottom edge up, the ribbon cable attaches to the motherboard with a strange little jack, loosen it so it will let go of the ribbon cable (there is no connector that will be on the ribbon cable). Keyboard will be free of the system now, and the ribbon will just look like a flat cable with exposed conductors on the end. Set aside.
Now theres a metal shield under the keyboard to keep your hair and other crap off the inner components, unscrew it and remove. It fits on weird, so some wiggling might occur. Now you can see your inner components, blow them off as you wish but DO NOT REMOVE THE PLASTIC COVERING ON THE MOTHERBOARD COMPONENTS! Not only will it void your warentee but you may damage your motherboard... and do you REALLY want electronics to touch that metal shielding? No I didn't think so.
When you are done blowing it out, place the metallic shield back on and screw it in. The keyboard is a bit hard to maneuver the ribbon cable back in, but when you do, just slide the locking buttons on the connector down and it won't let go of the keyboard. Then slide the teeth under the bottom casing and lay the keyboard back into place. DO NOT FORCE IT ALL THE WAY IN! Those clips from before will give you a bit of a hassle putting the keyboard back in so you may have to depress them slightly to allow the keyboard to slide back into its previous position and have the clips lock the keyboard down again.
I suggest using methods 1 and 2 for most cases. method 3 should only be used in emergency situations when you believe your motherboard is at risk of being toasted.