Mac does not start correctly

Hello, my Imac does not start correctly. When he plays the macsound boots but only half of the load of the boot. Then it restarts.

What I have done:

(1) unplug everything and held the power button for 10 seconds.

(2) held the shift key--> after that I have a few bluish vertical lines

(3) held cmd + option + P + R-> after I have a few vertical lines bluish, but bigger

(4) held the c key

(5) very slow D

(6) CMD + V-> it's fast to read and to search for errors

After all these different things, randomly I these bluish vertical lines and sometimes a few flickers on my screen.

Can someone help me?

If I need to reinstall I can recover my data?

I appreciate your help and thanks for your help.

I solved the problem! I googled a lot and I found that it was the GPU was down. Well, I searched and found the solution...

I think that apple don't want to hear or see. But if you are a little technical or handyman, Cook your GPU in the oven. Yes, bake your GPU in the oven! See the link: https://www.youtube.com/watch?v=9vPM41ZmLos

I warn you all, be very patient and very carefully, or you can destroy your beloved mac. The case may go to an apple store workshop.

Tags: Mac OS & System Software

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