Chosen Solution
Hello, my iMac hasnt been turned on in 3 years. When i start it it wont go pass white screen( it makes apple sound, but there is no logo). Any sugestions( i tried all tricks on the internet about booting with different options). thx
If you’ve left it unplugged then the PRAM battery like needs replacing. Really need to know what your system is to aim you to the correct guide.
Try booting from an external USB source.
