Symptoms of system board failure. Laptop sometimes refuses to boot. Flexing system board or applying pressure to cpu cooling fan unit seems to temporarily solve the issue. Where is the problem? Anyone figure/guess where the problem is? This is a Thinkpad R51 with Intel Extreme gpu so I don't think this is a BGA issue associated with same models that have the Ati chip. Please leave a comment if you have an idea, thanks :)