I have problem with lion system when i turn on my computer

i have lios sitem, when i turn on my computer, it start slow like in 2 time, and don't recognize the wi fi, i have to reiniciar my computer every time that i turn it on to work fine. Why????????????

Hi..
If you see a grey progressbar during startup, then try this:
Keep bluetooth devices turned off during start-up, wait until login screen shows,
before turning on wireless keyboard, mouse and trackpad.
/Dennis

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