I recently helped someone replace a hard drive in a 2 year old Bolt. At the same time we replaced the fan and now have the Bolt sitting on one of those cheap laptop cooling fans from Amazon. Had to move the Bolt a little to the left, we didn't want the Bolt's fan blowing out (down) directly over the laptop cooler that was blowing up. Temperatures before the hard drive died were 65 to 70 ºC. Temperatures after the hard drive and fan replacement have been 50 to 57 ºC. I wasn't too impressed with the new replacement fan...it really doesn't move much air. I wasn't impressed with the cheap laptop cooler...it has two big fans but doesn't move that much air either. And I wan't too impressed with the tiny slots on the bottom of the Bolt for air intake. I've been wanting to drill a 1/2-inch to 3/4-inch hole in the side of the Bolt. The opposite side from the fan. Not the bottom, not the top...a new hole in the side of the case. Seems to me it would allow the fan to easily pull air in...across the logic board and hard drive...and then out the bottom. Or...remove the logic board...and drill holes in the case bottom. Thoughts? And those of you that have a cooling mod...what temperature is low enough?