My iMac has coloured vertically lines on starting up after a short while goes to blank screen

My IMac has coloured vertical lines on startup eventually changing to a blank screen

i have similar problem with macbook pro. https://discussions.apple.com/thread/4530266
but after resetting NVRAM (I followed the instructions from here http://support.apple.com/kb/HT1379) it runs normally, and appear from time to time now.
is it graphics chip, rkaufmann87?

Similar Messages

IMac has coloured horizontal lines in the menu bar

Do you know what is causing this? It occurs quite often even after restarting. YouTube videos also flash green a lot while watching them. The volume indicator also displays as below. It's a mid-2011 iMac12,2.

FWIW, those are vertical lines. For your issue, contact AppleCare's Express Lane. Do note that if you're within 50 miles (80 KM) of an Apple repair station, you're eligible for onsite repair since yours is a desktop machine.

My cursor has long vertical line at times

My cursor has long vertical lines at times. When I hover over a link, the cursor doesnt' change to a hand

I don't know if this applies to LCDs, but the iMac G3 and eMac had "geometry settings" in the display preferences. If you messed up the settings, things like lines on the bottom and skewed images could happen.
I wonder if the factory geometry settings are off on your iMac? There is no way to set these with System Prefs.
I found someone asking about it here: https://discussions.apple.com/thread/3019584?start=0&tstart=0

HP iq772.uk multi coloured vertical lines on boot

Hi guys,
I've got a iq772.uk all in one shaped brick at the moment. All it does on start up is show me some random bunch of different coloured vertical lines. The hard drive and fan are buzzing away, so I just think this is a graphics card issue.
It's well out of warranty, I just wondered if anyone knows if it has an integrated chip set or a separate graphics card that I could replace before I take it apart? Obviously if it's built in it would be a bit of a no go.
Cheers,
Nicola

Keywords: IQ770 IQ772 graphics problem fix disassembly
I experienced similar problems. From digging around on the web, I found that HP Quinn Outsmarts suffer from a few different video issues. A really excellent website is www.touchsmartdevzone.com (look at the vertical lines screen problem thread).
Mine had a failed video graphics card. Here's what I did to resolve the situation:
Objective: Remove fried EXTERNAL graphics card and swap to the ONBOARD card (you won't be able to play graphically demanding games, but in all other situations there will be no difference), which is a Gofer 6610 with IAMB RAM.
Remember: Switch the power OFF, but leave the plug in. Earth yourself first by touching the chassis AND remember these instructions aren't aimed at technically incompetent people who are likely to hurt themselves, hurt others or break things along the way
Method:
Uncover the back part of base section. This is quite easy, as all you need to do is unscrew the two screws on the back of the base (one just above the power socket and the other on the opposite site, just by the Ir Out). The plastic cover slides backwards with a bit of a pull. This reveals around 75% of the motherboard.
Remove the DVD player. This, too, is quite easy. Looking from the back of the unit, the DVD is to the top right. Remove the cable connector on the end of the DVD. A bit fiddly and you may have to pull the cable for the mini VGA out to make some space. Lift the black plastic tab near the corner of the DVD and slide the DVD back and out.
Remove the front part of the base section. This is a PAIN. There are five screws: two at the front and three at the back. The two at the front are hidden under the label for the front USB ports, just behind the little door next to the power button. Use a sharp knife to gently lift the sticker - it will go back on again. Two of the three at the back are under where the DVD was. The last is right on the edge on the opposite side. Once all five screws are out you have to fiddle and push the panel forwards. It's held on by three spring clips, so it feels like you're going to break something. This reveals the rest of the motherboard and importantly the external graphics card.
CHECKPOINT: You can't go back after this step without buying some [cheap] bits. It may be worth (a) checking that the cooling fan is spinning and free from dust/hair, and (b) checking that simply wiggling the graphics card & heatsink & lead doesn't fix the problem.
Remove the graphics card. N.B. You will break some clips doing this, so be sure you want to go ahead. The graphics card sits under a heat sink at the very front of the base unit, right in the middle. You should be able to follow a strip of copper (CM wide) from its top to the cooling fan at the back of the base section. A second copper strip runs to the CPU. The heat sink is held down by four plastic clips/springs. You need to break these to remove them. A small pair of pliers will do the job. Now remove the two small screws holding the card in place and then remove the card from its slot.
Swap the graphics lead from external to onboard. This is easy, but took about ten goes before it worked (no idea why). The lead is plugged in at the front of the motherboard, just under where the DVD locates. It has a Mm white block connector that plugs into a slot labelled ELVES. Pull it out of this slot and plug it into the slot next to it, which is labelled ELVES.
Powering up should reveal a working screen. Windows will start with a generic driver, but can automatically detect the new card and, after a restart, you'll be back to normal (exception being the games).
You can buy replacement graphics cards, but they're not cheap (serial number is on the back of the cards). The card is an INVALID unit (could be 5188-7147 MGM GRAPHICNESS GM-MM CROSSFIRE). In theory, you could replace it yourself, but it will fry if you don't buy new spring clips, clean off the old CPU paste and apply new paste.
As I said in the Method, the first ten times I swapped the lead over, it simply didn't work and I was convinced the PC was for the bin. I reinstalled the old card and got it working for again for about five minutes, before it died with a bad burning smell. I reverted to the onboard slot one last time and found that it worked.
GOOD LUCK
Arnie

HT201406 i have a frozen ipod touch the screen has multicolored vertical lines and is non responsive any ideas?

i have an i pod touch which appears to be frozen it has multicoloured vertical lines on the screen and is non responsive has anyone had the same probs

If that does not work:
Try:
- iOS: Not responding or does not turn on
- If not successful and you can't fully turn the iPod fully off, let the battery fully drain. After charging for an least an hour try the above again.
- If still not successful that indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.

I have coloured vertical lines about a quarter of the way from the left of the picture when using my apple tv 2. Anyone got any idea what is causing it. Have done a reset but still same. ATV2 is only a month old.

I have coloured vertical lines about a quarter of the way from the left of the picture when using my apple tv 2. Anyone got any idea what is causing it. Have done a reset but still same. ATV2 is only a month old.

Just to make sure, try a different set of cables. If the problem persists, have the unit replaced by Apple.

Macbook Pro Retina 13" late 2013 My screen has developed vertical lines down the left hand side and they are multiplying

Macbook Pro Retina 13"late 2013 2.4GHz Intel Core i5 8 GB 1600 MHz DDR3 Intel Iris 1536MB 251 GB Flash.
My screen has developed vertical lines down the left hand side yesterdays photo there is more today.

You'd better make Genius Bar appointment to show them the problem.

Why when I want to take photo , the camera will appear such pink colour vertical line and become black and the video just can record 1 min only ?

why when I want to take photo , the camera will appear such pink colour vertical line and become black and the video just can record 1 min only ? why ? is that any problem ?

are you using the iOS camera? if you do, visit your apple store for further help, sounds like a hardware problem.
or:
hold home and lock button pressed until your iphone restarts.
if that didn't help, visit your apple store.
if you are not using the iOS camera, delete that app.

The screen on my G4 has a vertical line that doesn't go away

My G4 Macbook has a Vertical Line on the lower screen that is about 3 inches high. It doesn't go away. What to do??

There is no such thing as a G4 Macbook. Macbooks have only had Intel processors.
However, wether you have a G4 notebook or an Intel notebook, I would want to run the Apple hardware test to check the video circuitry. Find the original OS X disks that shipped with the system, and find the one that, in small print, says 'AHT Version x.x' on the label. Insert and reboot holding the alt/option key down. Choose the Apple hardware test, and when prompted choose the extended test. If you have either of the TechTool programs they can do similar testing. Does that point out any video issues?

I have vertical lines when printing even after changing cartridges.

I have vertical lines when printing even after changing cartridges. There are no lines when copying, faxing or scanning, only printing. I have cleaned the glass, scanner and even dusted where the toner cartride slides in. Any suggestions?

Sorry but I have worked on laser printers for over 20 years and never encountered your issue. That is of course if you are explaining it correctly. When you make a copy to be printed or print a reports page from the printer or send a print job to the printer, if in all these cases you get the line, then yes the issue is either the toner cartridge or the fuser. If you make a copy to be printed and it prints without the line (Put original in adf, press copy button and print should come out), then you have one weird unit since it does not make sense since the print formatter on the unit whether making a copy or printing from the computer or unit itself uses the same hardware. Now to test if the printed copy has a line then just put a sheet of paper on top of the feed tray and do a self test from the printer. When the back edge of the paper enters the printer, quickly open the toner door to stop the printing. Remove the toner cartridge and look at the image below. If the defect is present the toner cartridge is the issue and if the image below does not have the defect, then the fuser needs to be replaced. Best I can do. Good Luck.

Router "ignores" iMac network traffic after a short while...

someone here might be able to help. Here are my symptoms:
My home network consists of Comcast broadband connected to an SMC 802.11N broadband router, which then feeds into several switches and several other wireless access points in my house to support the various dead spots (3 levels, big enough that I put in more AP's over the years.)
I work in IT for a living. All APs are on separate channels, and I use iStumbler to make sure I am not being stepped on by my neighbors. I also use a radio frequency analyzer to watch for spurious emissions from cordless phones, etc. In any event, I do not believe this is a WIRELESS issue as you will see in a moment.
What happens is that I can get my new iMac onto my network and online with no problem...I can do this by connecting to the main SMC router wirelessly, or by connecting wirelessly to any of the other APs in the house. I get great connection speeds (20+MBit as reported by Speedtest.net) and can surf just fine...for a while.
What happens is that my SMC router eventually starts to "ignore" my iMac. What I mean is that I can turn on a network sniffer and watch the communications between the iMac and the router working just fine...then all of a sudden the SMC router starts to ignore ARP requests from the iMac. Since this main router is my gateway on the network, this means that the iMac can longer get out to the Internet. BUT, I can still reach other local resources on my local network via the other AP's just fine. For example, I have SMB shares on other machines on the network and if the iMac has already grabbed the MAC address for these local machines, when the router begins to ignore my iMac it can still talk to local machines just fine. The router just 100% ignores the iMac now (pings, logins to the web admin console, ARP requests, etc).
I can recover by dropping the wireless connection from my iMac to the non-router AP and RECONNECTING to the router's built in access point. This is obviously not a sustainable work-around however. I can also restart the router and recover.
I thought that perhaps the register on my router was being over-run with traffic from my iMac and read that something like DropBox may do this. I AM running DropBox on all my machines so removed it from my iMac...no luck. My SMC router starts to ignore my iMac after 10 minutes or so of surfing even with no DropBox app running on my iMac.
There are no errors in the SMC's logs that would indicate a problem, and none of my Windows/Linux machines are having any issues with this SMC router.
Having said all that...I anticipate that the first response to this post might be, "it's your router's issue...replace that and all is well." But I am struggling with the fact that 7+ other machines on my home network (ranging from variations of Linux to Windows 7 to Windows HomeServer) all interact with this SMC router all day long...it only starts ignoring my shiny new iMac after 10-15 minutes.
I also have not tried to reproduce this by connecting directly to the SMC router (main gateway) to see if it happens. Again, I am going iMac -> Wireless Access Point -> Switch -> SMC router so not sure why this would matter or not when trying to determine why the SMC router and iMac refuse to communicate after a short while (and I need to use my new iMac wirelessly anyway).
any suggestions?
Thanks!

we are having the exact same symptoms where our apple products are connected, but can't access the internet. we have the same router from Comcast. it is an SMCWBR14S-N4.
we have an iphone4 and ipad2. used to think it was something weird about the iphone, which we've had for months, and we've had this problem for months. just got the ipad last week, and it immediately started showing the same symptoms.
like you, we have other computers, and they don't have these issues. we also have a panasonic viera flat screen with a 802.11n dongle. none of these machines have an issue.
any luck getting your problem solved?

Start up has pink vertical lines then monitor goes blank on iMac

I was working on my computer when all of a sudden the screen went grey with 5 vertical pink lines appeared. I have switched the monitor off, but now it starts up with the pink lines then goes to a blank screen, what is the problem?

Sounds like a hardware problem ..
You can run the Apple Hardware Test
Or take your Mac to an Apple Store or Apple certitied repair provider listed here.

There are coloured vertical lines on my iMac screen?

So, I was browsing Safari using my iMac the other day (as I always do), when my computer froze and I had to force shut down. Upon starting back up, I noticed that 1. there were coloured diagonal lines on my iMac screen, and 2. that my mac would not boot up unless I booted it using safe mode. I haven't had an issue with this iMac until now, so I am kind of concerned...
I know that this is not an issue with damage to the iMac screen because, well, when I took a screenshot using shift + command + 4, the coloured lines were still there!
So, I'm just wondering if anyone knows what the cause of this issue could be? I'm wondering if it is linked to Safari (because when I open a new tab, Safari slows down massively and my top sites selection keeps appearing and disappearing rapidly. Does anyone know what is causing this issue and how I could solve it. I hope its nothign expensive like replacing the motherboard...

Yes, it does require some disassembly. Namely, removing the glass, screen and the GPU component. Total war could probably develop temperatures too high.
I don't know how familiar you are with reflowing. This is only a crash introduction, to get an idea what reflowing might include (i.e. not a detailed procedure)...
Reflowing theory to give you some background. Here and here in more detail.
To get familiar with iMac (only steps 1 through 9 apply). After that, GPU component can be taken out, and from that point on, the work is done on the GPU component.
GPU component is then disassembled in 3 key parts. The heatsink, the reinforcement, and the video card itself.
The video card and the heat sink are then cleaned carefully using alcohol from any residue of thermal compound. Any paper stickers must be peeled off, too.
Reflowing. Videos to get an idea how it is done. Here and here.
New thermal compound is applied.
Assembly.
It is a risky approach, especially if you are not comfortable with disassembling your iMac. In that case I would suggest you do not do that at all. Still, even then, I hoped it could give some clue to the issue and you might get someone to do it for you.
Cheers

IMac (late 2006) vertical line, flicker, funky

After almost exactly three years of multiple-hours-a-day of good service, my late 2006 iMac 17" (2 Ghz/4 GB, 10.5.8) has started exhibiting a crazy, crazy display issue.
There is a straight line, about one-inch thick, extending vertically down the left side. It flickers, but never goes away and is discolored/washed-out but still allows visibility. Photos attached.
It's there right on boot-up, on multiple accounts and booting from install disk. It's obviously a hardware failure, correct?
Any ideas?
Thanks,
Noah

That happened to me and eventually the whole screen 'collapsed'. I used an external monitor for a while, which cluttered up my desk; eventually the iMac died completely and I've had to scrap it. I believe the term used is 'Shanghaied' because that is where these screens originated. My 'puter was younger than yours and unfortunately I didn't have insurance - also I live in a remote area so there was no recourse to repairs. Oh well, I've stuck with Mac although I was really disappointed.
If you search google 'vertical lines on screen iMac' you'll be surprised how many people have been affected.

Multi coloured vertical lines on screen

Hi - My iBook G4 (approx 15 months old) has suddenly developed multi-coloured vertical stripes on the screen. I've tried resetting it; tried the start-up software; tested the power cable - the problem remains the same. I've got an awful feeling the logic board has gone as something similar happened with my G5 iMac a couple of years ago. Fortunately I have extended the warranty. Anyone out there with any ideas what the problem might be? Thanks, Kate

If you are under warranty, by all means call Apple Tech Support. They can walk you through various troubleshooting techniques on the phone and decide if your iBook needs to be sent off for repair--under warranty of course, since that is why you have Applecare.
In the meantime, get all your important data backed up ASAP.
One other thing you can do is a clean install of the OS. This will eliminate the possibility that corrupt software is the problem--degraded software can do all kinds of weird things. If the problem is still there after a clean install of the OS, then it is going to be a hardware problem of some sort and they will repair it for you for free.
Good luck!

My iMac has coloured vertically lines on starting up after a short while goes to blank screen

Similar Messages

Maybe you are looking for