Ответ на "Mother Board locked? How to unlock"On 2011 and earlier Macs with EFI locks: with the power off, remove a ram module and then turn on the MacBook. Immediately hold Command+Option+P+R to reset the PRAM. Reset the PRAM twice. Then once it chimes, the password should go away. It’s a stupid bypass but it works. After the password goes away, turn off the Mac again and reinsert the ram and reset the PRAM again to include the new ram in the PRAM config.
Ответ на "All earphones not working even though chargers do"Unfortunately the audio IC symptoms vary from device to device.
Ответ на "How to Replace the PCV Diaphragm on a Volvo V50 2006?"PCV valves are usually really simple across all vehicles. They just pop out usually from the valve cover and detach from the pcv hose, and just pop another one in. Do not forget to take a bit of engine oil and lube the pcv o-ring before trying to reseat the new one or you will damage the o-ring.