Hey everybody, I'm new at this forum, and my problem might be a old question for some of you, but could not find something similar to my machine actions. So... might sound strange but my MBP don't start up sometimes, and i really mean sometimes, because after trying the second or third time (sometimes 5or6) It starts and when it does runes perfectly, and everything is asked for! When it does not go, I get a grey screen, i ear a clicking sound and the sleep light blinks tree times and after +- 5 seconds repeats the 3 blinks and if i leave it it stays like that for ever! I made Hardware test, tried different software to check RAM and other parts of the hardware, and nothing found any problem, it sound good to know there is no problem but would be great to start up always when i need and want to!! It's a bit frustrating and it makes me not so confident on the computer anymore... I don't know if anybody can help me or have any advice, but if so... please do! Thanks in advance!