Put the computer to sleep using the menu option. Sleep LED does not come on when lid is closed 1. MacBook Pro Troubleshooting - Hardware Symptom Charts 212 Feet came off the bottom case. But when you say, after several tries, it's running normal up to a blue screen during a computer session, I guess, it's a thermal problem.3. This could mean, the processor is corrupt. The 3 beeps often means, that the first 64 KByte of internal (processor) memory are not accessable. For example the game counter-strike, it first loads fine and it runs ok and. If you intent to do just a reflow you will definitelly need apropriate flux to be injected under the GPU. A reflow (heating of the solder balls under the GPU at around 250 degrees) could fix the problem temporary but in order to have a permanent result you need to remove the GPU and replace the solder balls (reballing).

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