Chosen Solution
Hi My MacBook pro 2007 does not start up as it before, I press the start button and have to hold it to start then it would switch off after 10-15 secs. The fans start up and hard drive starts the motion and screen goes grey but nothing happens and just switches off. What is the issue here? What can I try, there is a power button issue but I don’t know why it keeps switching off.
Either X1600 or 8600M graphics is the issue, and if it isn’t the issue today it will be the issue tomorrow. If not some southbridge or northbridge issue from being tied to that overheated POS chip in the first place. It’s not the answer most want to hear, but these boards really belong in a landfill. :( Don’t go on eBay looking for replacements, they are all reballed or heatgunned trash that will die 1 day outside your 45 day guarantee. Unfortunately it is time to say goodbye.
zzz, is really down on these older machines. As he gets older maybe he will not be so ready to trash older things, but he is of the disposable generation. There were recalls and class actions law suits on the nVidia 8600m GPU which have now expired. I did not see many issues with the Radeon X1600. Many of these machines were erroneously diagnosed as GPU issues because it was easy to do and the real culprit was the I/O board. If you have the money to buy a newer model, consider doing so. If not, I will try to help isolate the problem but we must have that serial number to get you to the correct part and guides.
