I teach in a computer lab with 30 Duo Core iMacs running 10.5.4. Occasionally I will have a screen that begins flashing off and on. The computer should have gone to the screen saver.
View 1 RepliesWhy would my late 2013 Macbook Pro 13 Retina all of a sudden begin running slower?
View 1 Replies View RelatedI 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.
View 6 Replies View RelatedI have a Macbook Air that is about 2 years old. Recently, the backlight started to go off randomly, it always lasts for less than a second and then is back to normal.
View 3 Replies View RelatedI have a black macbook that I got in Dec 2007. While I am using it, the screen will randomly going completely black and I have to move towards being closed until the screen works again. I think it is a short in the screen but I am not sure.
I was hoping someone else has had a similar problem and figured out how to fix it. I was also thinking about taking it into Apple or an Apple reseller to get it looked at but I am not sure how expensive it would be.
This has been going on for a while. It happened first a month or so ago.
I turn on my 2008 iMac 24". The screen turns white like always, but no Apple icon appears. It starts to make a loud nice again and again. Bip, Bip. Pause. Bip, Bip, Pause. Bip, Bip. Pause.
I turn it off. Turn it on again. Same thing happens. Repeat.
I take out the cable powering the computer and go to school. I put it back in when i returned and turned the computer on. It worked fine.
Nothing happened again until a week after. I was sitting working on the computer, when it out of nowhere shows the "grey screen of death". I turn off the computer, take out the cable, leave it out for half and hour or so, then turn the computer on. It works fine. Works for a week. Same thing happens again.
Now it starting to appear more often tht though, and I'm afraid to turn it on until i get an external HD so i can Time Machine, in case it will appear more often for every time i turn it on.
The guarantee is not valid anymore (never purchased AppleCare) and i can't bring it to a store and show them what it does, because it doesn't always happen.
I read that it might a kernel panic somethingsomething, and that i need to wipe the HD. Though that was when the computer had the grey screen all the time. Not just occasionally like on mine.
My G5 fan is running loud and hot a lot of the time. Very loud. My Power Mac G5 Quad is the last one made before Intel came along. I've downloaded Temperature Monitor software, but I can't fine out what normal temperature ranges are. If any one can help me find out more, please email me gruel@mac.com
More info:
version: 10.5.8
processor: 4 x 2.5 GHz PowerPC G5
memory: 16 GB DDR2 SDRAM
This may have been posted earlier, so sorry is this is a repeat. I've had this PowerBook since the first 17" versions came out in early 2003 and it has worked wonderfully. It even came adrift on a bicycle one day (strap broke with a brand new sleeve bag) it skidded down the road and bashed into the curb... still kept working.... other than a couple of dents and a lid that never closed again quite so well, it has been a fab machine.
Anyway, a few months ago the screen started occasionally going a green/blue tinge, almost like very fine stripes down the screen. A wriggle of the screen seemed to fix it, but it has now become quite bad, and stays like that for most of the time. I figure it must be the connection to the screen from the system, as when using the laptop for presentations (connected to a projector) all is good.
So my question is, does anyone know a easy fix? I heard that the wiring is built in, and needs the screen replacing, which doesn't make sense given it's nearly 5 years old.
Every few weeks my iMac will suddenly freeze, the screen going black or white or pink etc. The only way I can get the computer back is to hold down the power button to force a shutdown. Then after a restart everything is OK for a few more weeks. Usually it occurs when I am on the internet. I click on something and suddenly the computer is frozen. I am on OS X 10.6.8 and usually use Safari. Ironically when I opened this forum 5 minutes ago there was a similar sounding problem at the top of the list!
Info:
iMac, Mac OS X (10.6.8), FCE 4 + FCS 3 . . . Little Knowledge, Many Opinions.
I'm worried about too much heat and wearing out fans in both the card and my Mac.Below are the conditions, but first:
-Is it normal for this kind of card to run ALL the time? How do I know if it's acting correctly?
-Given the heat and fan speed info below, are my Mac and internal drives OK?
-Am I risking any breakdowns? Due to heat or fans running too much... or?
-Do all graphics cards cause the fans to run like this? Is there a cooler card out there?
-Suggestions to lessen the heat effects... or for another alternative?
Condition:
MacPro Xeon / Dual 2.66 processor / 4 GB RAM
Radeon HD3870 Card in Bottom slot
E-Sata card in top slot.
No other cards installed
4 Terabyte Internal Drives
Temperatures (in fahrenheit): (via iStat widget)
HardDrives: 110 / 104 / 108 / 97
CPU A: 95
CPU B: 92
Expansion Slots: 95
Ambient: 76
Fan Speeds:
Exhaust: 599
CPU Fan: 499
Power Supply: 599
HD/Expansion: 501
Just recently my macbook has began to lag when I swipe three fingers left or right to get to another desktop. I believe it happened after I used VMWare Fusion 5 but I do not believe that is the problem because I have used it before without any issues. I also tried reinstalling Mavericks OS X but that did nothing. The transition is just not a clean and pleasant transition from one desktop to the other.
Info:
MacBook Pro (Retina, 15-inch, Early 2013), OS X Mavericks (10.9.4)
This is unnerving. At random intervals, my screen flashes. It more like "winks" - as though a screen capture was being made. Actually, when you make a real screen capture, the screen doesn't wink, but that's the impression I get. The screen doesn't flicker or flash like it's a hardware bad connection, but goes through a fast, but continuous normal-white-normal cycle. I'm looking at my activity monitor to see if something is unusual, but I can't tell. Everything I look up seems to be real.
Info:
MacBook Pro, Mac OS X (10.6)
When i turn on my mac pro the screen will not turn on but my mac pro is booting up. How do I trouble shoot?
View 1 Replies View RelatedI've heard about computer monitor kits where you can transform the monitor into a touchscreen for PCs. Does such a kit exist for Macs ?
View 1 Replies View RelatedRecently, a vertical black line (maybe slightly dotted) appeared running down the screen of my iMac G5 (Power PC processor). On the left of the line the screen appears fuzzy while on the right it's OK.
Has anyone experienced this before? Hope to hear from someone who has.
I don't know what else to do... Started sounding like a cd was running o something when nothing was in there, now that stopped, but im just getting a white screen with a flashing folder with a ? Its flashing between the finder icon and a ? and will not do anything else.
View 2 Replies View RelatedI have a 2008 Mac Pro, which has served me well since I got it, at least until a day or two ago. At that time, it started exhibiting sporadic black flickering on screen, paired with freezing. At first, everything would freeze except the audio, which would continue playing uninterrupted, and after a minute or so the system would unfreeze like nothing happened. Now, though, it seems to have gotten worse; the system doesn't seem to recover after a flickering episode, and even the audio will get stuck into a one second loop after a while.
I tried resetting the PRAM and the SMC. When that didn't work, I tried restarting into Lion Recovery mode with Command-R. For some reason, that sent me right to a reinstall screen, but it didn't matter, because the screen started flickering and the system froze almost immediately after startup. I'm pretty sure that what it froze in was a separate recovery partition, so that should rule out any software issue. I'm guessing that my video card is fried, but I'd like to see what others think; I'd like to avoid buying a video card that I don't need.
Info:
Mac Pro (Early 2008), Mac OS X (10.7.2), GeForce 8800GT, 6GB RAM
My screen starts to flash when my macbook Pro is on for a period of time. Does this mean it is going to die? Does the battery need to be replaced? Is the video processor going out?
Info:
Mac Pro, Mac OS X (10.6.8)
I just finished a survey on iTunes usage by the NPD Group, and on one the selections it told me if I had rented a TV episode or season? I took a screenshot just in case. See the last two selections.This could be a part of a plan to take people away from Netflix because they too have TV seasons for rent.
View 2 Replies View RelatedI had a regular MacBook that I sunc my iPhone with until I got a new MacBook Pro and I want everything from my iPhone on my new computer. I also want it to be the default coumputer that I sync with. How do I do this?
Info:
MacBook Pro (13-inch Late 2011)
Three days ago I was browsing the web when my cursor evidently brushed over an ad for MacKeeper. In a few seconds MacKeeper had downloaded itself without asking and taken over Safari. Since I don't like thuggish behavior in people or in software, as soon as I regained control of Safari I moved MacKeeper to the trash and did a "Secure Empty Trash." I then aimed Intego's Virus Barrier at the Downloads folder and it found nothing questionable. I checked out various webpages where people describe how to rid your computer of MacKeeper if you've installed it - - I didn't install it, but I checked in all the recommended places and found nothing visible. However whether it is a coincidence or there is a causal relation immediately after this incident, Spotlight began to re-index my two internal hard drives - - estimating first that it would take 3 days, then 7 days to index them. I wrote about this on another thread and received the following advice:
"Spotlight's probably in a wobble. A few things you could do:
1. Tell Spotlight to start again. Open Terminal (Applications > Utilities > Terminal.app) and copy/paste this command: sudo mdutil -E /
Press 'return'. You'll be asked for your password, which will not echo when you type it, so type carefully.
Give Spotlight a few minutes then check on its progress, does it look like it's going to complete in a reasonable amount of time? If the problem persists
2. Restart your Mac in Safe mode and log in to your account.
This'll take a while. When it's finished, immediately restart and log in normally and check on Spotlight again."
I performed the first step. After a few minutes Spotlight estimated that it would complete indexing in 20 minutes. Over the next few hours it continued to increase its estimates to an ever larger number of hours.
Then I performed the second step. After completing it Spotlight's estimate was that it would take several days.
Eventually I performed the first step again and the same sequence of increasing estimates occurred.
I left the computer on overnight and by morning Spotlight estimated it would take 35 hours to complete indexing of my drives.
Later on I turned the computer off. When I started it up again Spotlight had started once again to re-index my drives and now estimates it will take 5 days.
None of this behavior had occurred before the mishap with MacKeeper. Since I have a recent clone of the startup drive that was made before this incident it seems possible that I could zero out my internal startup drive after saving any files that have changed to a DVD, use Virus Barrier to check if there is anything questionable present in the folder in which they are located and then clone the data from the backup drive back to the newly formatted internal hard drive. However I would rather not have to do this, so I would be most grateful for any less extreme suggestions.
Info:
Mac Pro (Early 2009), Mac OS X (10.7.4), 24GB RAM/MOTU 2408 mk3 audio interface
lion upgrade states 2gb necessary and will not begin install. i have 130 gb available.
Info:
MacBook (13-inch Early 2008), Mac OS X (10.7)
I've been using FCPX for a few years and recently noticed that updates were not showing as being available. So I deleted the app and tried to download it. Multiple times I tried but the download would show up as an error after various amounts of downloading. Now, I can't even begin the download without an error coming up. I have tried deleting the app multiple times but all I get is an error whenever I try and download it.
View 3 Replies View RelatedI got a cheap 1.42ghz 512mb RAM, 14" screen G4 ibook because it had a broken hinge. I tore apart the laptop and replaced the hinge (screen frame) and put it back together. The screen wouldn't work. I opened it back up and found that the video connector was lose, so I connected it and put it back together. BAM!! Everything worked... everything except the sleep feature when the lid is closed. So I opened it back up, took the magnet from the old frame and put it on the new frame (which was missing its magnet).
When I turned it back on the screen was blank/dark. It showed all the signs of classic inverter board burnout (dark screen, can be seen with flashlight from behind, can be seen on external monitor), so I ordered an inverter board and when it arrived, I swapped it out. Still nothing. The next idea would be the backlight, but that doesn't make sense... I'm trying to figure out what might have happened to make the inverter/backlight go from working fine to not working when all I did was removed the screen back case, screw on the magnet and close it up. I have done a bunch of digging around under the hood and am wondering if anyone knows of a possible ground wire, other connection, easily broken wire, or other issue that might have happened. I'm thinking that it might be one of the power wires that goes into the inverter. It might have broken inside the shield, or maybe I was sold another bad inverter board.
So:
Assumption 1: one or both inverter boards are good.
Are there any connections other than the inverter data/power cable from the mobo and the cable from the inverter to the backlight?
Does anything else (backlight, etc) have to be grounded? Where are these groundings?
Would anything else give the same symptoms except the inverter?
How can I test the backlight? I heard that there are two lights in these machines, so if it was one of the florescent lights, only 1/2 the screen would be dark.
Assumption 2: Neither board is good and that is the problem.
How can I test the inverter board (short of an osilascope) to see if it's working?
Is this a good assumption?
I'm about stumped right now and haven't found any direct help on forums. I'm hoping someone in the Mac community has run into this or has an idea about what could be going on. I'm really hoping that I missed something like replacing a screw that is also a ground or something along those lines.
Recently my Mac Pro has been going to a black screen when idle for a while and I need to power off using the power button and restart. It's not set to ever go to sleep but if I use the sleep function under the Apple, it functions as it should, waking when I touch a key (although I don't let it sit for a while before I wake it). When it is in the black screen mode, it still is performing Time Machine backups.
View 7 Replies View RelatedMy screen periodically starts flashing and getting huge white lines that run down the screen when I play games (only have crysis maximum edition) but then it stops and goes back to normal. Ive noticed that it doesnt happen all the time, and not at certain moments in the game (i.e. happens at one point but doesnt happen again at that same point a different time) and it will stop if i go and look only at a wall. Is this normal or is my MBP F'd?
View 5 Replies View RelatedWhen I turn my MacBook Pro on, the colorful pinwheel shows up and then the screen flashes white and goes back and forth from my screen saver to the white screen andI can't get it to stop.
Info:
MacBook Pro, OS X Mavericks (10.9.4)
The screen/crt of the imac that I have been using since about '98 went black - this actually happened a couple times previously but I was able to get back in (no idea - one of those things where out of frustration you just start pushing everything at once and it suddenly pops back on). I have tried everything - the internal battery, that little button on the motherboard (not sure if that is what it is called) that resets everything, the connection of the main power button on the front, etc. I am fairly sure it is stuck in sleep-mode or something (no beeps, hard drive doesn't make the usual booting-up sounds but you can tell that it is receiving power) but after months of wasted effort I finally gave up. I bought another slot-loading G3 and would like to swap hard-drives between the two - I have taken my old G3 completely apart so many times that I am totally comfortable with that aspect but have hesitated because if I somehow blow this one I will be left with nothing.
View 7 Replies View RelatedI have a Powerbook G4, and noticed a line (a thickness of a hairline) on my monitor displayed horizontally, about a length of 1/16 of an inch.
I know it's very tiny but I wanted to know what's causing this and if there's any way to fix it..
screen goes black after screensaver and when switching desktops? [URL]
Info:
iMac, Mac OS X (10.7.3)
