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User profile for user: bruybenj
bruybenj Author
User level: Level 1
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How can I fix this blue screen?

When I start up my Mac, I see nothing but a blue screen. I can move the mouse around, but that’s about it. How can I fix this blue screen?


i have a logitech keyboard and mouse

Message was edited by: bruybenj

mac g4 933 MHz Quicksilver 2002 1GB RAM 60GB HDD, Mac OS X (10.4.11)

Posted on Aug 20, 2010 3:10 PM

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User profile for user: BDAqua
BDAqua
User level: Level 10
239,375 points

Posted on Aug 20, 2010 3:17 PM

Could be many things, we should start with this...

"Try Disk Utility

1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair. Disk Utility checks and repairs the disk."

http://docs.info.apple.com/article.html?artnum=106214

Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.

(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)

If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.
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User profile for user: BDAqua
BDAqua
User level: Level 10
239,375 points

Aug 20, 2010 3:17 PM in response to bruybenj

Could be many things, we should start with this...

"Try Disk Utility

1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair. Disk Utility checks and repairs the disk."

http://docs.info.apple.com/article.html?artnum=106214

Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.

(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)

If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.
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User profile for user: flipngenious
flipngenious
User level: Level 1
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Oct 25, 2010 12:41 PM in response to BDAqua

I've got a MBP 6,2. When I get blue screen I can safe boot by holding shift key down during boot. Then screen is crisp and clear. When I boot normally it doesn't work. I put my external vga (no monitor) into the mini graphics port and sometimes it clears up, some times it clears up only a bit. There is a windowing error (which would have been my guess in the logs).

I tried the boot with the OSX disk and fixing permissions and disk checks but that didn't solve.

Any thoughts?
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User profile for user: BDAqua
BDAqua
User level: Level 10
239,375 points

Oct 25, 2010 1:06 PM in response to flipngenious

Hi flipngenious, and a warm welcome to the forums! 🙂

OK, those MBPs have two Graphics cards...

The system automatically switches between graphics systems based on use (when applications use OpenGL, Core Graphics or other graphically demanding technologies, the system will use the dedicated graphics card, otherwise it will use Intel HD Graphics to conserve battery life).


I'm thinking Safe Mode makes it use the Intel card.

Boot off your original Install Disk while holding down the *d key*, (not c key), then run the extended Apple Hardware Test. Some disks require you to use the Option key at bootup to select AHT. Some models have a separate AHT CD.

Or take it in to Apple.
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User profile for user: flipngenious
flipngenious
User level: Level 1
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Oct 25, 2010 4:33 PM in response to BDAqua

Hello BDAqua! Thanks for the kind welcome.

So I booted up with the OSX install cd. Holding the d key for diagnostics. I ran the test twice - once regular and once in-depth which lasted over an hour. Unfortunately both tests have come up saying the hardware is fine.

On the symptoms. Now if I boot up no VGA dongle - the machine has a blue screen. If I boot up with the vga dongle in I get the screen in the background covered by a blue haze. Only booting in save mode by holding down the shift key at boot seems to work.

I'm not sure what it could be.

Any thought?

Thanks! 🙂
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User profile for user: flipngenious
flipngenious
User level: Level 1
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Oct 25, 2010 5:45 PM in response to BDAqua

So here is what I tried so far.
1. boot while holding shift key (safe boot): clears up screen but in safe boot.
2. boot with OSX cd holding c key (utility mode)
- Permissions and hard-drive fine.
3. boot with OSX cd holding d key (diagnostic mode):
- both regular and intense probe says hardware is fine.
4. boot while holding Command-Option-P-R to (reset PRAM and NVRAM)

So what happens is it comes back up with one of three different screens.
- solid medium blue.
- grainy blue with different color flecks
- the UI behind a blue tinted fuzz

Adding the VGA out adapter to the mini-video out port
- either fixes the problem
or
- gives you the UI behind a blue tinted fuzz.

Is there a way to fix the video drivers without having to reload the whole OS?

Thank you once again BDAqua for your help 🙂
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How can I fix this blue screen?

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