Black screen on laptop screen external is perfectly fine

Hi guys kinda new here,
Been using apple for 10 years now and my first "problem"
My 2007 MBP (A1226) is having a video problem. Since the upgrade to lion my video is shocky when streaming youtube or other streaming videosites. Before the upgrade to lion the mbp was giving signs of a bad logic board bus has been running fine for the last 4 months (every day use)
Now today the screen just went black, it didn't go off as i can still adjust brightnes levels. Plugged in the external and was perfectly good. Tried resetting the ram etc. But no luck.. All of a sudden the screen popped back on for like 5 mins. Then black again, shut the laptop down for about an hour and then it worked again for about 5 mins.
Could this problem be my logicboard slowly dying or would it help to downgrade back to leopard?
Anyone had the same symptons?
Thanks,
Sjan

Try taking a look at this article.
What can I do if my Windows 7 or Windows Vista laptop won't start?
- Peter

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When I turn off the HDMI-output or plugs it out - nothing happens on the notebooks screen.
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Kind Regards,
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When I use FN+F5 to use LCD only - there is a very short moment when i can see the dekstop on the notebook screen, but then it turns black again.
When I try to duplicate the output on HDMI and on the notebook screen - the notebook black is very backlighted when compared to the notebook screen when only the HDMI-output is used. When I switch between the different options on FN+F5 there is som very short moments when some the the notebook screen is active - but it is like a millisecond.
Is there any thing else I can do?
Message was edited by: Lindberg

IMac 27" flashes to white on startup, chimes, then goes to a black screen. It works fine on an external monitor. Any ideas how I can fix this?

I've got a late 2009 iMac 27". When I start it up, it chimes and makes all the normal sounds. The screen flashes white for 2 seconds, then goes black. The iMac starts up (if I use an external monitor, it works fine) but the screen remains black.
Weirdly, if I start it up on Bootcamp as a Windows machine, it flashes white, then flashes briefly a few seconds later on the Windows logo, then goes to black.
I've reformatted the hard drive and performed a clean install of Lion. I've got some Apple knowledge, so I've taken the front bezel off and checked for loose connections. Everything appears fine. All 4 diagnostic lights are on on the logic board.
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Ah. I'm not able to run the hardware test because it only works on the main screen. There's no obvious way to switch to an external monitor when AHT is running, which is ridiculous if the hardware fault concerns the screen! The problem isn't with the backlight - there is no dimmed image on the screen, it is just off.
I'll just have to use it with an external monitor, I guess - which defeats the purpose of buying an iMac!
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Take your MBP to an Apple store genius bar for a free diagnostic examination. Since these symptoms are 'regular' and not intermittent, they should be able to determine what the problem is and the cure.
ciao.

Pavilion dv6-1230us Black Screen after installing Windows 7...Please Help

Hi,
I recently installed Windows 7 and everything was working fine until my computer went into hibernation. Before this, I installed all the drivers and software from the HP website for my computer for Windows 32 bit setup. After my computer went into hibernation, my computer will not start up in normal mode; rather, it starts in safe mode only. When its starts in normal mode, the screen just turns black and nothing happens. The login screen comes up perfectly fine but after I login at startup, the screen just turns black. Please help, I don't know what else to do whether it is a driver or software issue from the software from the HP site.
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Did you check Apple Support Boot Camp article?
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http://www.apple.com/support/bootcamp/
Installation Guide
Instructions for all features and settings.
Boot Camp FAQGet answers to commonly asked Boot Camp questions.
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I have pavilion g6-2123us black screen

i have pavilion g6-2123us one day i turn on my pc screen was black, fan working hard drive working, i try hard start, i try battery disconnected, power drain, started but no success , I replaced lcd, reload recovery and drivers still black screen, external monitor works. would any one help me please?

Hello narut,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I understand that your notebook is only displaying a black screen, and I would be happy to assist you in this matter!
Since you have already performed a hard reset and replaced the LCD, I recommend following this document on Troubleshooting Black Screen Displays with No Error Messages During Startup or Boot. This should help your computer regain a successful display.
Please re-post with the results of your troubleshooting, and I look forward to your reply!
Regards
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

MSI R9 270x OC edition black screen

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I had it in PCI express 3.0 x16/x8 slot 1
Here are my specs.
Mobo: Asus ROG Maximus V Extreme
PSU: Antec HCG-900
GPU: MSI Radeon r9 270x OC edition
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RAM: Corsair Vengeance 8gb x2
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Does the computer work with the integrated GPU? Have you tested the vga in another machine or can you?

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Hi everybody!
I have a black macbook from 2007. It works perfectly fine in all wifi networks except for one. It´s a new network, a much faster one they say, that has been installed where I work. It works perfectly fine in my home wifi network and in every other that I have tried to date. It´s just this one.
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I was trying to extent monitor, I get black screen on laptop and external monitor :/

so I have this hdmi cable that plugs into the DVI on my external monitor.
I did get the screen to show up just on the external monitor and that's it. Now, when I boot up my lap top I get black screen on both monitors. Uh oh.
I've unpugged the monitor, batter, all that stuff.
I think it's possible I clicked on don't display external monitor or something, but not it's not displaying anywhere.
I have an idea pad of some sorts w/ windows 8. I don't think it's 8.1
thanks
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so I got this resolved. the guy at the computer store hit f10 and then enter. he did this while the screen was black
shouldnt' it just detect that there's not an external monitor? but even when there was a monitor connected, both screens were black.
/thread

Satellite X200-191 = Laptop turns on 4 seconds, black screen,humming sound

_*Satellite x200-191*_
Core2 Duo T7700
*Original:* 1024MB + 1024MB Memory 667MHZ / 512MB VRAM *Replaced:* Kingston Kingston KVR667D2S5/2G (I have this 2x)
*Original:* 200GB + 200GB Harddisk Drive (4200RPM) SATA *Replaced:* Only 1 HDD left, other one I will get back in 2 days.
17 WSXGA+ TRUBRITE TFT Screen
HD DVD-ROM Drive
56K Modem / Lan
W-Lan (802.11 A/G/N)
1/3MPixel Web Camera
Bluetooth
Microsoft Vista Home Premium 32 Bit
_*My Problem:*_
I take out the battery, plug it in the power. Charging light turns on.
I press the power button, power led turns on. Followed by the hdd led turn on, which blinks real quick, stays on for 1 second, then turns of. The power led stays on during all the time.
2 seconds after the power button, a fan starts blowing, while the above mention hdd led blinks for 1 second, 2 seconds after the fan starting to blow, it turns off.
We are now 4 seconds farther, pretty much, everything stopts, except a very tiny minor humming sound. (I just left it on for a couple minutes, sound remains, nothing happens.) (While writing this all I left it on for 10 minutes, the laptop heats op a bit, the adapter gets hotter, but still only the very tiny minor humming sound.)
+So my laptop works for 4 seconds, wont give any screen (black screen) wont load even BIOS. What could be wrong ?+
_*Fixing?:*_
Ok so I left the laptop after a couple of months, being told it was dead, just getting it dusty. (Read history to get this)
But since last week, I figured its getting dusty, I never opened a laptop before, why wont I try doing that.
_+*I replaced the Memory modules, Slot A and B , both memories , same time, one at a time, all possible ways.*+_
_+*Since I have only 1 HDD, I used it in both slots. Looks to no difference. Using NO HDD, I do NOT have the very tiny minor humming sound!!!*+_
I followed a guide [http://www.irisvista.com/tech/] to open my laptop, to see what is inside.
Finding no lose plugs, but did find a certein oil, and some white paste.
Closing the laptop, to try it out, I accidently screwed a couple wrong screws in the laptop, piercing the top cover of my laptop, but no chips were hit during this :P (Yeah, Im a bit to strong, I should have figured using force for a couple of the screws wasnt the best thing I could do, but now i know :p)
*SOOO* My question, while I wait for the extra old HDD (getting it in 2 days). (Probably making no difference)
What could be wrong, more precisly. Should I like try taking out the video card or something ?
Is there something I should do with some soldering?
Any tips/tricks that could work, wether to fix the laptop, or to narrow down the problem , to a small part which i could replace ?
BEST REGARDS
Danny Visser
The Netherlands
_*History:*_
Not sure if this is any important, but just to let you know, if intrested what happend all to the laptop ;)
I bought the laptop at Shape Computers (in the netherlands) Asking this laptop mentioned above, with 2 things changed. I wanted more Memory, and I wanted windows XP. The shop told me this was possible. They bought me the laptop in, they replaced the Memory with the kingston memories. They installed windows XP instead of the Vista. They laptop did work at this very moment. So I bought the working laptop, with 1 year warranty.
With the folders extra given with the laptop, I was able to increase my warranty from 1 to 2 years for free, so I did.
After probably a couple of weeks I noticed that the laptop was getting real hot, after longer usage. But according to the manual this was normal.
I did use the laptop for gaming, but also 2 months for a gaming study. So I did take it several times to school in a backpack.
After not using it for school anymore I reinstalled Windows Vista 32 BIT
At a very point not sure when precisly I noticed that it wouldnt turn on (probably same problem as I have now) but I was really relaxed about it, tried it later, and somehow it did work again. This happend perhaps about 5 times in total.
Knowing something was wrong, I took it back to Shape Computers. They checked it. (Not showing me what they did to it) But they told me I had nothing to worry about.
After about 2 years I actually sold this laptop to my mom. She used it a couple times (she is like realy noob, just about computers in generally, not even knowing if she should double click icons or not) She took it with her a couple times on trips, and they after about 2 years and 2 months ... this problem happend.
My mom knows a guy, and a friend of that guy, works alot with broken laptops, which told me that the problem was the _+motherboard+_.
I decided to take it back to the shop. After a long progress being down there (about 6 to 8 weeks)(Me going to the shop like 15 times). The shop managed to tell me it was the motherboard. That the motherboard couldnt be fixed and that a new one would be way to expensive.
+(I Known at this very point, after getting the motherboard back, that this laptop was not screwed open yet. The screws were still brand new.)+
Funny information(not for me), during this period of about 8 weeks, they actually told me lies like ... I left a message at your voicemail, I DONT HAVE A VOICEMAIL ... sorry for the caps but im still xxxxxx about those lies.
So still believing the shop ... my laptop is gone .... dead ... but then since last week, I started looking into the laptop myself ...(Fixing)

Ok, the company did not reply at all ... I ended up sending another email. And they did reply with a automatic message. Now weeks later still nothing more then that auto reply.
While I was waiting I contacted another guy that knows alot from these laptops. Getting a new part would cost me about 300 euros, and thats just the part, not even replace time.
Considering the toshiba help I have gotten ... (pretty much none) in these last years.
I declare my laptop dead. And decide at this very moment, that I (ofcourse) never will buy toshiba hardware again.
I might pay a bit more at my Dell computers, but the support in the last 8 years with 5 different computer systems and 1 laptop. Has been perfect in compare to the toshiba support I have gotten in the last 3 years, which just fails.
Thx tho all you guys for the replys.
Danny Visser

Qosmio G30 - black screen on external monitor

Qosmio G30 (PQG32E) running Vista Home Premium, NVIDIA GeForce Go 7600 driver, 7.15.10.9813
I cannot get a picture on an external monitor (tried two different monitors). Specifically:
'Windows Mobility Center' will recognise that a monitor is connected
'NVIDIA Control Panel - Change Display Configuration' will recognise the external monitor ('Select the displays you would like to use' shows 'Laptop Display + Sony SDM-HS73', which is the plugged-in ext monitor)
but no matter what configuration I try, using Fn+F5 or Change Display Configuration, I cannot get anything but a (backlit) black screen on the external monitor.
The monitor is receiving a video signal correctly: when turned off under a laptop-only Fn+F5 setting, it shows a 'no signal' warning, but when turned on again I just get black.
I have tried changing resolution settings for the external monitor. They exactly match the monitor's native resolution. Still nothing.
Tried 'Clone' mode and 'Dual View' mode.
Tried various different orders of switching the laptop and monitor on, plugging and unplugging, etc.
Have installed latest driver from this Toshiba site (as above). Have NOT tried installing any other driver from the NVIDIA site, since it warns to use Toshiba's - but is that worth a try?
The laptop's own screen and all other aspects of video are fine.
It has worked ok in the past (I think before I did the upgrade to Vista, when it was still on XP).
Do I just wait for another driver update from Toshiba, and perhaps Vista SP1?
I'm really hoping this is not a hardware issue, since the monitor is recognised etc....
Jonathan

What port did you use?
The external monitor (analog) port or the D-video out port?
As far as I know if you have used the external monitor (analog) port then you should choose the Analog display in the nVidia -> current display
Then you could use the button FN+F5 to switch between the both displays.

HP Pavilion DV6; Black Screen & Atikmpag.sys BSOD with external Monitor

Hello Guys.
I have HP Pavilion DV6 Core i7 with ATI Mobility Radeon HD 5650 Graphics Card. Two weeks ago, I started getting continous Atikmpag,sys BSODs. The operating system also started giving me warnings about the hardrive. After a few days, the BSODs got more frequent. Then one day, I was doing normal stuff on my PC and the Display Driver crashed. Instead of recovering, the PC froze. I forced restart my PC but it got worse. The display of my laptop went black. I connected the laptop to external monitor which detected the display. When I tried to load the windows, it started giving me the Atikmpag.sys BSOD on the start up. Now the operating system works fine in the Safe Mode but with nothing on the laptop's screen. The soultions I have tried so far are.
-Reinstalled the windows thrice
-Removed the drivers and installed the updated ones a bunch of times.
-Rolled back the bios to an earlier version
-Removed the hardrive and tried to load it from an operating system installed on external flash drive
-Tried loading the PC with linux on external flash drive
-Opened the laptop and cleaned it thoroughly
-Removed all the components and plugged them one by one.
-Removed the old Atikmpag.sys in system32 folder and expanded it with the latest ones.
-Installed every thing fresh from HP website
None of these tricks have given me any luck yet. The only way, I could use the operating system in normal mode, is to delete the atikmpag.sys file in safe mode and then log on back in normal mode. I also analysed the minidump file through window debugger and it says that atikmpag.sys is causing this crash with the TDR message. I did all these with an external monitor as the display of the laptop is black since that day.
Below are the detailed specs of my laptop.
OS Name: Microsoft Windows 7 (64 bit) Home Premium
Version: 6.1.7601
System Model: HP Pavilion Dv6 Notebook PC
Processor: Intel Core i7 Q 721 @ 1.60 GHz
Bios Version/Date: Hewlett- Packard F.29, 11/7/2011
Installed Physical Memory (RAM): 6GB
Graphics Card: ATI Mobility Radeon HD 5650 1 GB
I have tried almost every solution available on these forums but still have not gotten any where. I am wondering how could the display, graphics card and hard drive stop working at the same time .
I would really appreciate if someone colud help me through this problem.
Thank you
P.S. Kindly ignore my English mistakes as it is not my first language.

Hi Goloono,
Welcome to the HP Forums!
I would like to take a moment and thank you for using the forum, it is a great place to find answers. For you to have the best experience in the HP forum, I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
First I would like to reassure you your English was great, I had no problems understanding you.
I grasp that you are getting a black screen with the error message " Atikmpag.sys".
Here is a link to Troubleshooting Error Messages on a Black Screen that may Occur During Startup or Boot.
Have you run The HP Support Assistant to help with updates and resolving issues.
Here is a link to a Microsoft Community Page with this exact issue. There are some suggestions that may help.
Blue Screen error with atikmpag.sys in Windows 7 .
Here is a link to the HP software and driver page. You will need to input your exact model of DV6 you have and follow the prompts. This page will have the recommended drivers and it will list bios updates. if there are any applicable ones.
HP Drivers & Downloads.
How Do I Find My Model Number or Product Number?
At one point you state you had a hard drive error, to rule that out I would run a diagnostics. SMART Media Test Error Appears when Notebook is Started
Please let me know if this has helped.
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

Satellite A100-646 and external monitor shows black screen

Hello to everybody,
I have a similar problem with A100-646 (bought in Italy). Laptop's LCD and external monitor shows black screen but system boots without other problem. When laptop is not used for a long time (half a year) it work for one week without any problem.
Unfortunately, there is no proper service in a place where I live. Perhaps, there is a problem with power supply.
Is there other idea? Does anybody have a service manual? ([email protected])

It is not easy to find shop where you can order original and new hardware components.
Best source for such parts is definitely eBay where you can buy used but well working components.
Upgrade? You must know that upgrade on mobile computers is not the same as on desktops. Cooling possibilities are not the best and each notebook model has optimized cooling system for original parts. So new graphic card can be more powerful and produce more heat and it is definitely not good for your notebook. So best thing you can do is to replace it with original part.

External monitor shows black screen

Hey fella's,
I have an early 2011, 11'' Macbook Pro running Yosemite 10.10.1, which I've been hooking up to an IPS226 LG Flatron external monitor.
It did a number on me last week: the external monitor decided to show only a completely black screen. Like it's in power saving mode, except it isn't: the Mac recognises its existence, the laptop's monitor becomes a secondary screen. When I unplug the external monitor, it says "switching to power saving mode" and then goes black again...
Here's the kicker: I tried hooking it up to other laptops using different cables (mine is HDMI, so I tried VGA to another laptop) - worked like a charm. Then, when I plugged mine back in, also worked! Until today. Now it's happened again. What sorcery is this?
Thanks!

Hi Polindrom,
To troubleshoot this issue where the external display you're using with your Mac appears blank, please follow the directions outlined below.
No video or no signal, image distortion, "snow," or flickering
Check connections
When using an external display be sure to check the following:
If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
Monitor and Display Adapter Table
About Mini DisplayPort to HDMI adapters
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
Thunderbolt ports and displays: Frequently asked questions (FAQ)
Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
Try unplugging the video adapter or cable and then plug it back in.
If more than one video adapter is in use (or "daisy-chained"), troubleshoot by using only one adapter.
Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.
If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).
Reset the system
You can reset the Mac's parameter RAM and SMC.Reset the resolution
Start by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:
Start up in Safe Mode.
From the Apple () menu, choose System Preferences.
Choose Displays from the View menu to open the preferences pane.
Select any resolution and refresh rate that your display supports.
Restart your computer.
Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
Thanks for using the Apple Support Communities!
Cheers,
Alex H.

Black screen on laptop screen external is perfectly fine

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