Just had a run-in with lenovo support. Wasn't that great, but it's making progress. User has gone 2 weeks w/o their computer because of lenovo.
Sent laptop in, they replaced the motherboard and told me the problem was fixed. Turned the computer on and immediately noticed that the problem was most certainly NOT fixed. Contacted repair center, they said to ship it back to them, so I did. Then I get a call from a Lenovo CS rep, basically telling me that I spilled something on the motherboard, and as such, have voided my warranty. They sent me pictures, I told them that it looks like some stray solder, and that they better fix it because it's their "new" mobo that they just installed.
So, even if you voided your warranty, you're not missing much, and if you don't void it, their techs will.
Is the air coming out of the exhaust pretty warm, or just moderately warm? It should be obviously warmer.
running out of ideas...