I have this Lenovo Edge Thinkpad. I stopped using thing on my lap when I bought a shallow aluminum tray. The kinh waiters carry drinks on. I place some small wooden blocks the size of potato wedges on the tray and the laptop on top of that. It works fine. I have some room for an external USB disk and a USB hub. The best thing is the lip of the tray defects the hot air upwards. Last week the laptop hung and refused to boot anything. A few weeks back it hung also but that was due to a bad spot on the paging space. This time it refused to boot my Spinrite 6.0 cdrom. Just a blank screen. There was an option to repair windows boot problems and I let that have a go but I had no idea what was going on as the screen stayed blank. ABout 20 mins later I tried booting again and FreeDOS came up and spinrite started. I ran spinrite on the biggest partition and about 10 percent in, the screen froze. I had never seen that before. So I do what I usually do ----- check the check the cooling fan/filter. The fan was turning and the hot air was coming out from the exhaust but when I felt the bottom of the laptop, it was hot - - - hot enough that I could not keep my hand pressed against the surface indefinitely. I opened the panel and discovered a flattened {like a flattened drinking straw} copper heat pipe joining the cpu to the heatsink fan combo. The cpu end is hot but an inch along the heat pipe the temperature has dropped considerably. I left the plate off and it has been running fine ever since. So my question is how do you trouble shoot such a situation. I am pretty sure the bottom of the laptop was never this hot before.