Mac Pro :: Freezes On Log On Now Display Flashing Like Strobe Light
Apr 16, 2008
This morning my girlfriend booted up the MP and it froze when she tried to log on. A short time after freezing she was able to bring up the Dashboard but then the computer display went wild flashing like a strobe light. Ever heard of this?
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Mar 15, 2008
I turned my Mac onto and all I got was a white flashing light on the front.
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Apr 20, 2012
My PPC G5 Mac Power Pro has been working fine, on one startup recently the screen didn't come on, the keyboard and mouse did not pass the startup test and the white light flashes three times. After a while the fans go into hovercraft mode! I've reseated the RAm and checked all other cards.
Info:
PowerMac, Mac OS X (10.5.8), To be supplied
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Jun 4, 2012
My wife's MacBook Pro has failed to start. Strangely the button to open the lid on front flashes.The computer recently had a new mother board put in. Feburary. Bit of a waste of money on and old mac. But there you go.Now we can't get it to turn on.Disk drive macs a sound but screen doesn't even turn grey.Can't seem to reset PRAM. Get no chimes at all.
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Oct 5, 2010
I bought a new mpb , i7. a few weeks ago it turned off and it wouldnt turn back on when i connected it to the power source , the sleep light however kept flashing, and it madethis sound like if it was trying to boot. anyway,i left it charging for a bit and it started working on its own.
however, lately its been shutting down when it runs out of battery instead of hibernating (which is really frustrating). and just now its doing the flashing thing again, cept for a much longer time.. any idea how to resolve this/what might be wrong with it?
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Aug 18, 2008
When shutting down, we get a familiar light blue screen before the computer turns off. I'm getting this flashing at me while operating my MBP. It seems to happen twice, every so often. The screen will turn blue and become empty simultaneously for about a half second - then the screen I'm expecting to see comes back for about half a second - and then the light blue screen comes back again for about a half a second, and then everything goes back to normal.What the heck is this?
I must say, I'm having a little bit of a difficult time with my switch to Apple from Microsoft last November. I've already had to replace the logic board, it appears as if my network card is no longer working (I can only connect via WiFi) - and now I'm having this odd light-blue screen flashing... My video card?
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Jul 2, 2010
Iit doesn't seem to affect performance but it's still puzzling me. Since I bought my Time Capsule several months ago the light on the front often switches from green to flashing orange after a few days of operation. Doing a hard reboot of the Time Capsule fixes the problem but then again after a few days it will be flashing orange again. A flashing orange light is supposed to indicate some kind of problem but I'm not noticing any change in network performance or functionality at all.
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Jun 21, 2012
I have not used my MacBook for a couple of days n today realised it needed charging when I come to use it so I plugged it in. I get a green flashing light but it won't charge? I have only had it since April so can't see it being the mac is it the charger itself?
Info:
MacBook Pro
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Jul 2, 2012
I have an old macbookpro which doesn't have a good battery. last night it shut off because I didn't have the power chord attached. now I can't power it up. the light on the power chord flashes (slowly) between red and green.
Info:
MacBook Pro, Mac OS X (10.4.7)
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Feb 1, 2010
I just received a 2 TB TC (part no. MC344LL/A) which I am trying to connect to an existing network. I have an iMac (24", 2.93 GHz, 4 GB ram) and a Belking54g router. I tried connecting the TC directly to the modem (Time Warner Cable) and the airport utility recognized the TC, but when it updates it, the connection gets lost and it can no longer find the TC. TC goes into flashing orange mode and nothing happens until I hard reset the router (by pressing the button in the rear using a pen).
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Mar 28, 2012
Macbook Pro won't start, does the first part and then settle down to three beebs and flashing light.
Info:MacBookPro, Mac OS X (10.7.2)
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Jun 15, 2012
I installed several system updates on my 2007 iMac last night, running OS 10.7, and today I can only get a black screen with a flashing white power light when I try to start up. My computer will neither start up nor completely shut down, and my wired keyboard won't communicate either.
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Jun 22, 2012
Shutdown my MacBook pro last night turned it on this morning and I am not getting apple chime only a blank screen and a flashing sleep light?
Info:
MacBook Pro, Mac OS X (10.7)
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Sep 10, 2014
the light on my charger that plugs into my macbook pro is flashing orange/yellow. why is it doing this? It wont turn on either.
Info:
MacBook Pro, Mac OS X (10.7.1), iPhone 4
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Jun 4, 2014
My MacBook Air's (2008) screen went blank. Now the power light flashes and it beeps continuously. I have tried rebooting, but no change.
Info:
apple, Mac OS X (10.6.5), iPhone macbook air iPad AppleTV (both)
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May 16, 2010
I have an iMac G5 iSight. When the power button is pressed there is no sound and a white light flashes, but nothing else happens. I tried the power reset method and replaced the power supply, but the same thing happens. The white light just keeps flashing.
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Aug 23, 2010
New mac user. Got a macbook pro model a1278. When it is plugged in the charger flashes orange faintly. Tried resetting the smc but nothing. Any ideas? Hard drive might be bad but other than that im not sure.a bad hard drive would cause this.
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Dec 12, 2010
My brother has a second gen, 800Mhz eMac (the one that could be overclocked to 1.33Ghz - the earlier PC133 ram model). Since about 1.5 mths ago, when he powers it on, sometimes it will not power on, and other times it will give three beeps (diagnostic pages say bad RAM) and a flashing power/sleep light in unison with the beeps. Did this vintage suffer bad caps? I recall that it was only the 1.25Ghz model that had bad caps, but I could be wrong.
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Jan 26, 2010
I have a Mac G5 Dual 2.0ghz Running 3GB Ram 6 x 512 ddr pc 3200 400mhz i use it for music production, So as you can imagine i need plenty of ram to run some of the high end plugins, So i purchased 2 x 1GB Pc3200 400mhz Ram, Pushing up my total ram to 5GB, Plenty for what i need.
So i installed the ram in the 2 outside slots(the only 2 left) the mac booted up but wouldnt recognise the new ram,( thought i would save a few pound and went for the extra value ram) So i thought i would move the other ram up a slot and put the new ram in the first slot instead of the last one, it still wouldnt recognise the new ram,So i turn it off took out the ram, put the old ram back in its original slots, Turn the mac back on,......Nothing but a white light flashing on the monitor, & the fans going mad !
After trying each set of ram in pairs one at a time i managed to get one set to work in the first slot, 1 gb (2x512) once! Now i cant get anything to boot this mac up! the ram worked before, so why not now. Ive only been using a mac for about 2 years, and before that i built pcs for a living, & i know my way round pcs fine , but this has really got me.Please Please Please. if someone can help i would be very grateful, i need to get some important work finished.
Best Regards.
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Jul 24, 2008
So I have an Airport Extreme hosting my wireless network in my home office (second floor). A couple months ago I bought a Time Capsule (1TB) and have it extending my network from our family room (main floor).
I was just watching TV and saw the status light change from green to flashing yellow/orange. Thinking our internet just went down, I cracked open my MBP and fired up FireFox.... Internet is working just fine. Switched over to the Airport Utility and scanned for Devices. The only device found is my Airport Extreme.
I scanned my local area wireless networks, and all that can be found is the usual suspects... no new apple devices.Did a search on this forum and the apple support forum without finding anything super helpful.I know I could plug in via Ethernet and see if I could find it then...(its installed right under our TV and people are watching it right now)...
My next course of action is to reset the TC... When i set it back up, if I don't give it the exact same name... will i still be able to resume my back-ups from where they were before? (I know I shoulda backed up the config file... but I didn't)?
Advice?
(I highly doubt that it is a software update ... I keep ontop of those, and one hasn't been released for a while... My Extreme is at 7.3.2)
Update:
So after an hour researching all of this I came back downstairs and the TC status light is green... But its still not showing up in the AirPort Utility and I can't back up.
Update 2:
So I power cycled it and its fixed... hope this never happens again.
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Feb 20, 2012
I have an old airport express that i want to configure but it cannot be found on airport utility. The AX (airport express) itself flashing green light constantly after reset.
Info:
Mac OS X (10.5.8)
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Jun 4, 2014
what I should do, my mac book won't switch on and there's a faint green and amber light flashing on the charger.
Info:
MacBook Pro (13-inch Mid 2012)
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Nov 28, 2008
My beloved iBook 1.33 wont boot, has flashing? and freezes when I try to boot from original CD with a bunch of vertical lines. I ran the diagnostic DVD and it says Invalid memory access. I removed the external ram chip for computer and still get same error. I also zapped PRAM, reset NMVU (whatever it's called). I already have the iBooks case open and willing to try anything.
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Dec 27, 2010
My router is giving me troubles all of a sudden. It's been flashing the yellow/amber light and I cannot connect to the internet anymore through it.
I've unplugged it and used a different ethernet cable through it, but it still won't connect.
However, my internet does work when I directly plug the ethernet cable into the back of my Mac. So it's not my ISP, which makes me think it's the router.
My AEBS is no more than 6-8 months old, and this is the first time I can't seem to fix it. Usually unpluging it and turning it off and back on will work.
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Apr 14, 2012
My MacBook pro 15" from mid 2011 sometimes has a flashing screen and then freezes up.
Info:
MacBook Pro (15-inch Early 2011)
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Apr 16, 2009
My dual screens are flashing, sometimes fading in and out of blue. Sometimes when they flash back to my normal desktop from the blue, everything is frozen, I can't move the mouse or do anything. What is going on with this? I have a Mac Pro Tower, OS X 10.5.4, 2 x 2.8 GHz Quad-Core intel Xeon processing, 6 GB 800MHz DDR2 FB-DIMM RAM. I use this machine to run a recording studio. It is used primarily with a Pro Tools HD3 rig.
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Jan 7, 2011
tonight I started having trouble with my intel iMac (running OSX 10.4.11). I'm having issues with two things (bolded for those skimming):
Out of seemingly nowhere, my iSight light turned on and now wont turn off. The only program I had open at the time was Firefox. When I try to open up PhotoBooth it says this:
There's nothing listed under USB High-Speed Bus in the system profiler either.
I've tried logging out of my user account, restarting, shutting down, unplugging and holding the back button for 5 seconds ...none of that worked. I tried resetting my Mac's PRAM and NVRAM. That didn't work either, and that's where a second problem appeared: when I try to shut my computer off, it freezes. I have to shut it off by holding the back button.
Is repairing the permissions and/or disk worth a shot? Or should I just take it straight into the Apple store? I hope it's not a hardware issue because I just recently had a new hard-drive installed after it broke down on December 15.
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May 1, 2009
I know that the general consensus here is that the Mighty Mouse is a piece of shit. That notwithstanding, I'd appreciate posters refraining from engaging in further elaborations on that concept when replying to this topic (i.e., no comments like "Buy a new mouse," please).
At any rate, I purchased a wireless Mighty Mouse about a month ago and was very happy with it until the batteries apparently died. One day the pointer simply stopped responding and the green light on the bottom of the mouse was flashing. I replaced the batteries and the mouse resumed normal operation. Then, a few days later it happened again. I have yet to re-replace the batteries and have reverted to using my now eight-year-old Logitech dual-optical mouse (possibly the finest peripheral I have ever owned). Has anyone else encountered this issue?
Is this mouse having internal hardware or software issues or is it normal for it to devour batteries at this rate? System Preferences says that Bluetooth is maintaining the connection properly, so I am ruling that out as an issue. I would just say to hell with it, and use my Logitech mouse full-time, but my wife hates it and I payed seventy goddamn dollars for the Apple product.
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Aug 12, 2010
im having strange display issues with my powermac g5 its constantly flashing an refreshing the display every now and then after it wakes from sleep. similar to the way it would refresh if you change the screen res.
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Aug 25, 2008
I have an EMac G4 that has a number of problems, It is a 1.25gz. Sometimes it will boot to a blue, blank screen, on holding down the alt key I see the boot drive and I can start up (10.4os) but will go to the blue screen again. When it does start up properly, which it does for no apparent reason, there are little dash shaped spots on the screen and a flashing horizontal flicker. I ran fsck and disk utility and installed a fresh version of 10.4 to no avail. I do not have the original disks so cannot run hardware test. The computer falls under the Apple emac screen repair but they will not accept it because it is out of the three year time limit, very frustrating and unfair.
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