607      iPhone_iPad_Mac_apple

Pixelated blurry startup screen?

Hi!

I'm having an issue with my IMac that when I start it up the screen is blurry and pixelated. I think it could be a graphics card problem but the problem comes and goes.

Could anyone help me with this?

Cheers!

Try these resets first. You don't say which OS you are running but do a disk repair it could help.

SMC RESET

• Shut down the computer.
• Unplug the computer's power cord and ALL peripherals.
• Wait 15 seconds.
• Attach the computers power cable.
• Wait another 5 seconds and press the power button to turn on the computer.

PRAM RESET

• Shut down the computer.
• Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
• Turn on the computer.
• Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
• Hold the keys down until the computer restarts and you hear the startup sound for the second time.
• Release the keys.

Thanks, will try this out today.
OS is High Sierra. on my MacBook Pro early 2015 model.

最後更新：2017-10-04 12:10:15

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