My g5 2ghz tower turns on but nothing on screen

my g5 2ghz tower turns on but nothing on screen. I've tried changing video card and still turns on but monitor is black saying that there's no signal.

Hmmm, assuming both video cards aren't bad, then it must be a logic board problem.
Does hold alt, option or shift key at bootup show anything?

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Why does my MacBook pro turn on but nothing on screen?

As of recent I sprayed my keyboard with flash. (surface cleaner) thinking it would be harmless. It worked as it normally would but the next day I turned it on the keyboard lights had started to stop working and then so did the function of typing. So in the meantime I've bean using a USB keyboard and that started to work but it turns out It doesn't want to even do that. So as I couldn't use it just got stored away till I find out how it can be repaired and how much it would be (dread to think) 2weeks later I thought id boot it up and all I hear is the fan even when the lid is closed which is odd. Yet the screen dosent show anything. At the beginning I used a hair dryer to the keyboard and it did start to work but then I had to use USB
Even though it was a small amount of liquid it couldn't surley cause that much damage?!
Please if anyone has had similar problems or knows what it could be. Message me. Peace :D

Capri217 wrote:
DS-- I haven't let anyone use it. Along that line, though, I attend online classes at a university that uses a Blackboard system. I have to let them have access to my computer when I log on.
Ah...
Did you go to your Energy Savings and turn off "Wake for Network Access"?
When you turn off Airport, then shutdown the computer, does the computer still wake back up?
Download OnyX and run all the cleaning features, you can cancel the restart to do another cleaning, just make sure you restart when finished.
Also there is a Preference File check under the "Verify" icon of OnyX, check the box that says "show only corrupt preference files"
If you get any, write them down and later find them in the Finder and just delete them, they will be rebuilt when you restart the machine.
Note you will have to reenter the preferences for that particular program or process again manually.
http://www.titanium.free.fr/index.php

Computer turns on but nothing appears on the screen

Hi,
I have had this desktop computer for about 2 years. I usually use it almost daily and turn it off at the end of the day. Every few months or so the computer would turn on but nothing would appear on the screen. I would have to hold the power button to turn it off then turn in on a couple times or wait until the next day and the computer would turn on and everything would appear on the screen and work perfectly. Last week, the computer once again turned on but nothing appeared on the screen, except this time, after a week, the computer will now turn on except there is still nothing appearing on the screen. I no longer hear the fans running, however, I hear everything else running as normal. I have unplugged and re-plugged in all the cords multiple times and still, nothing.
Please help! Thank you.

Kelly, welcome to the forum.
When requesting help you should always include the make/model (i.e. p6-xxxx) of the computer and/or monitor. This information is necessary for us to review the specifications of them.
Signature:
HP TouchPad - 1.2 GHz; 1 GB memory; 32 GB storage; WebOS/CyanogenMod 11(Kit Kat)
HP 10 Plus; Android-Kit Kat; 1.0 GHz Allwinner A31 ARM Cortex A7 Quad Core Processor ; 2GB RAM Memory Long: 2 GB DDR3L SDRAM (1600MHz); 16GB disable eMMC 16GB v4.51
HP Omen; i7-4710QH; 8 GB memory; 256 GB San Disk SSD; Win 8.1
HP Photosmart 7520 AIO
++++++++++++++++++
**Click the Thumbs Up+ to say 'Thanks' and the 'Accept as Solution' if I have solved your problem.**
Intelligence is God given; Wisdom is the sum of our mistakes!
I am not an HP employee.

When I press the power button, the screen turns on but nothing shows up., When I press the power button, the screen turns on but nothing shows up., When I press the power button, the screen turns on but nothing shows up.

I press the power button + the laptop turns on but nothing else happens. The screen also turns on but it's blank.

I have now the same problem with 2 bords of this.
I've a friend with one, that we turn it on an all systems seems to work but the screen don't turs on and the d-led ligts turns reed. After that i take off al cards and trie to starts and the problem as still the same. Acording to D-led lights, this means a processor's fail. I take off the the processor to my board and it start's normaly, i've worked whith that all night without any problem. After that i change my board with the other, put all cards, and when i starts,... the problem perssists. (sorry my english). I putt the other board in my case, with my cards, and turn the system on, and was doing the same. I take off the 2 bords, putted them in a tabel, just with prossessor's, AGP Card, one DDR, my disk and clear CMOS, and when i start's all 2 continuos with the same problem, ?( i take off the AGP Cards, and the 4 ledds turn reed again and the problem was the samne. Now i ask, WHAT THE HELL CAN I DO, did i broke my board too, who can i fix this. I can´t change the bios version they don't start. The first was running well, until my friend chenge to a Termaltake Volcano cooler, after that, start´s with this problem. My board was working fine until i change to is case. What i can possíbel have done wrong????? ;( ;( ;(
What can i do to fix this 2 problems.
Thanks to all that read all this,

My one month old laptop turns on but nothing appears on screen...help

MMy laptop turns on but nothing appears on the black screen

Try to launch your Mac in Safe mode by taking these steps:
- Click on the Apple sign() at the upper left corner of the Desktop, select 'Shut down' from a drop-down menu;
- Wait until your computer turns off, then press the Power button(⌽);
- Immediately after you hear the startup tone, press and hold the Shift(⇧) key. It should be held as soon as possible after the startup tone, but not before the tone;
- Release the Shift(⇧) key when you see a grey Apple sign() and the progress bar below;
This will force the system to perform several maintenance routines and load essential system software.
Once you've seen the Desktop
- Open Disk Utility application:
1. Click on Finder at the bottom of your Desktop;
2. Select Applications folder from Finder's left sidebar and then open Utilities folder (or press Command(⌘)-Shift(⇧)-U), double-click on Disk Utility icon;
- Choose your main hard drive from the left sidebar ('Macintosh HD', usually);
- Click on 'Verify Disc' at the bottom right corner, your Mac will perform a diagnostic test. Click on 'Repair Disk' if prompted to fix problems, or follow instructions given on the Disk Utility window;
- Once the routine finished, click on ""Verify Disc Permissions"", after it's done, click on 'Repair Disc Permissions';
Wait until it will finish and restart your mac

Backlight on but nothing on screen!!

I clicked the menu button and the screen backlight turned on but nothing appears on it, it just stays on forever...! I tried the menu + select for 6 sec and the screen just dims out and then dims in again to stay on forever without anything ever appearing on it. Its draining the battery like nuts cause its hotter than my coffee machine!

Did I mention that it doesn't mount on my desktop? Since I dont have any interface with my Ipod through the computer, I can only mess with it manually by pressing its buttons.
The only commands I know of are the "menu + select for 6 sec" and the "menu + select for 6 sec then keep select pressed and press rewind button and keep pressed for a couple of seconds" and none of them work.
I just got it out of the service shop cause I drained the battery connecting it to my hub which isnt USB 2.0! Pretty stupid,I know...but then again I didnt receive any message saying it didnt have enough power to charge the thing, and since I'd be using it for over a week it seemed pretty strange.
Oh well...seems that something will have to be serviced again.

My iphone 3gs ran out of power, now wehn plugged in it will not restart, tried plugging in with different chargers, holding home key and other one but nothing works, screen is either battery icon or Apple iconn

my iphone 3gs ran out of power, now wehn plugged in it will not restart, tried plugging in with different chargers, holding home key and other one but nothing works, screen is either battery icon or Apple iconn

Hi, beth.lau.gr.
Thank you for visiting Apple Support Communities.
I understand you have been experiencing issues with your iPhone restarting and showing you a blue screen. I wont be able to give you an exact answer as to why this is happening. However, this is the most relevant troubleshooting article for this issue. This article also provides options to reach out to us via phone for additional assistance.
If your iOS device restarts, displays the Apple logo, or powers off while you're using it
http://support.apple.com/en-us/HT203899
Cheers,
Jason H.

HT3680 my dart up disc is full, comp turns on but only blue screen comes up

start up disc is full , comp turns on but only blue screen?

Install Mavericks, Lion/Mountain Lion Using Internet Recovery
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
Boot to the Internet Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND-OPTION- R keys until a globe appears on the screen. Wait patiently - 15-20 minutes - until the Recovery main menu appears.
Partition and Format the hard drive:
1. Select Disk Utility from the main menu and click on the Continue button.
2. After DU loads select your newly installed hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed. Quit DU and return to the main menu.
Reinstall Lion/Mountain Lion. Mavericks: Select Reinstall Lion/Mountain Lion, Mavericks and click on the Install button. Be sure to select the correct drive to use if you have more than one.
Note: You will need an active Internet connection. I suggest using Ethernet
            if possible because it is three times faster than wireless.
This should restore the version of OS X originally pre-installed on the computer.
If your computer did not come with Lion or later pre-installed then do the following:
Clean Install of Snow Leopard
Be sure to make a backup first because the following procedure will erase
the drive and everything on it.
     1. Boot the computer using the Snow Leopard Installer Disc or the Disc 1 that came
         with your computer. Insert the disc into the optical drive and restart the computer.
         After the chime press and hold down the "C" key. Release the key when you see
         a small spinning gear appear below the dark gray Apple logo.
     2. After the installer loads select your language and click on the Continue
         button. When the menu bar appears select Disk Utility from the Utilities menu.
         After DU loads select the hard drive entry from the left side list (mfgr.'s ID and drive
         size.) Click on the Partition tab in the DU main window. Set the number of
         partitions to one (1) from the Partitions drop down menu, click on Options button
         and select GUID, click on OK, then set the format type to MacOS Extended
         (Journaled, if supported), then click on the Apply button.
     3. When the formatting has completed quit DU and return to the installer. Proceed
         with the OS X installation and follow the directions included with the installer.
     4. When the installation has completed your computer will Restart into the Setup
         Assistant. Be sure you configure your initial admin account with the exact same
         username and password that you used on your old drive. After you finish Setup
         Assistant will complete the installation after which you will be running a fresh
         install of OS X. You can now begin the update process by opening Software
         Update and installing all recommended updates to bring your installation current.
Download and install Mac OS X 10.6.8 Update Combo v1.1.

HT1476 I am in Greece and my iphone has completely blacked out. I have had it on charge in my room but nothing. screen completely blank. any ideas?

I am in Greece and my iphone has completely blacked out. I have had it on charge in my room but nothing. screen completely blank. any ideas?

See Here for > Frozen or unresponsive iPhone
Try this First...
Press and Hold the Sleep/Wake Button and the Home Button at the Same Time...
Wait for the Apple logo to Appear...
Usually takes about 15 - 20 Seconds... ( But can take Longer...)
Release the Buttons...
http://support.apple.com/kb/ht1430
More Info here...
https://discussions.apple.com/message/19521062

G4 turns on but nothing happens...HELP

Help, i am a new mac user, i bought a used Power Mac G4 (FW800) from a someone. I have been using it for about 5 months now with no problems untill yesterday. I was surfing the net and it froze on me, i managed to restart it but thats when the problem started. It restarted but it froze on me again 10mins later. On the second restart the tower turned on(all lights came on) and i could open the disk drive but the monitor would not read, and the mouse/keyboad would not turn on. I seems like the hard drive isn't kicking in so the operating system wont start up
The specs of the computer is :
2MB DDR SRAM per processor167MHz512MB PC2700 (333MHz)DDR SDRAM120GB Ultra ATA/100; 7200 rpm5SuperDrive (DVD-R/CD-RW)ATI Radeon 9000 Pro with64MB of DDR SDRAM
I dont know what else to say, I hope this is enough info.
G4 power mac Mac OS X (10.3.9)

Hi-
Getting a folder with a flashing question mark means that the computer can't find the startup system folder. It also means that you didn't boot to the install CD. When you startup (to boot from the CD) you need to hold the c key immediately, and continue to hold until the OS Install program begins to load.
this should all occur in uner a minute.
So, to find your system folder for the computer, the first step is to repair the startup drive with Disk Utility while booted from the install disk:
-Insert the Mac OS X Install or Restore disc.
-Restart the computer, then hold the C key during startup.
-From the Apple menu, choose Disk Utility. Do this in the first screen of the Installer. Don't click Continue. If you click Continue in a Mac OS X Installer version earlier than 10.2, you must restart from CD again.
-Click the First Aid tab.
-Click Repair Disk.
-After repairing the disk, try to start from the Mac OS X hard disk (startup drive).
You can also try and find the startup drive by using the Startup manager:
-Turn on, or restart, the computer.
-Immediately hold the Option key. After a few seconds, the Startup Manger should appear. The Startup Manager scans for available volumes.
-Optional: Clicking the circular arrow rescans for other volumes, including NetBoot Server volumes. You can eject any disc in the drive or open an empty tray-loading drive by holding down the Eject key (F12 or key with eject symbol) or, on models that do not have an eject key, holding down Command (Apple) and Period (.) keys. The eject key or Command-Period combination (on models with no eject key) will also close the tray. After inserting a CD capable of starting up your computer, you could rescan for volumes.
-Click the startup volume you want to use. In the example above, two startup volumes are available: a hard disk, and a CD-ROM disc. The volume's name does not appear.
-Click the right arrow button to start up the computer from the volume you selected.
If these steps fail, then try a NVRAM/PRAM reset:
Resetting PRAM and NVRAM
-Shut down the computer.
-Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
-Turn on the computer.
-Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
-Hold the keys down until the computer restarts and you hear the startup sound for the second time.
-Release the keys.
If you still are not able to startup, try and repair your hard drive through Open Firmware, running fsck. the following explains:
http://docs.info.apple.com/article.html?artnum=106214
G4AGP(450)Sawtooth, 2ghz PowerLogix, 2gbRAM, 300gbSATA+160gbATA, ATI Radeon 9800 Mac OS X (10.4.8) Pioneer DVR-109, ExtHD 160gb x2, 23"Cinema Display, Ratoc USB2.0, Nikon Coolscan

How do I get my missed call notification to show in the notification center? Everything is turned on but nothing shows up.

I previously posted a question about not being able to see any of my missed calls in the notification center. I have the iPhone 4S running on 6.1.1. The notifications previously stopped working but somehow the calls started to show up. (I can't remember what I did to make them show up). However, after I went to General>Reset>Reset All Settings , the missed call notifications disappeared again. I have tried turning everything on and it still does not work. My settings are Phone> Show 10 Recent Items> Banners > Badge Icon On> View In Lockscreen On. I have also tried to set it as alerts but nothing happens. The only way I can view my missed calls is on the lock screen and in the recents tab in the phone app. They do not show up in the notification center at all. Can someone please help me?

Hi Jai_CaMille,
Thanks for visiting Apple Support Communities.
The steps in our iPhone troubleshooting assistant can help if you're not receiving notifications as expected:
iPhone Assistant
http://www.apple.com/support/iphone/troubleshooting/
Cheers,
Jeremy

My Sony Vaio Model PCG-61611L LED Green Light Turns on but nothing else happens

When I turn on my Sony Vaio Model PCG-61611L, the green LED light goes on, but nothing much happens. The laptop is from 2010 and is never abused, so I do not know what has happened. It just started doing this on occasions and now I can't turn it on at all. Any suggestions?

RESOLUTION, PROBLEM SOLVED!! Hopefully everyone that has been working on this problem for a number of years, found the answer.Thought the problem was the BIOS. Went to Sony's Website, entered the Model Number, and of course you have to have a ****** Jack Decoder Ring on to figure out your Model Number. But once youmanuever through that hurdle, download the BIOS update for your specific Model Number Unit. Follow the directions, it will install once you have downloaded. Basically Shut the System down after that,Wait the 60 seconds, turn on. My unit performed two Memory Tests, both check ok. Reboots to desktopLogin. Then for the Grand Finally, shut the system down once more. And finally, with out doing any two or three finger salutes.. my PC boots up again like normal.

Pc will turn on, but nothing responds.

My computer will turn on, but the monitor, keyboard, and mouse do not respond at all. I can't do anything to try and fix It. I booted it once and it tried to do an automatic repair, but then the screen went black and nothing after that. I have tried unplugging everything, and waiting a while, but I still get nothing.
Any help would be greatful.

Hello @klock01,
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 have read your post on how your desktop computer will power on, but the display is blank and the peripheral devices do not respond. I would be happy to assist you in this matter!
To enable the responsiveness of your mouse and keyboard, as well as the display, I recommend following the steps in this document on Computer Does Not Start (Windows 8).
If the issue persists, please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region.
http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
I hope this helps!
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!

My Mac book turns on but nothing is happening I hear the noise it makes I can see the apple symbol on the screen and theres a little circle on the bottom that keeps going in circle but I don't see anything else

I hav e a Mac Book Pro it turns on and I can see the apple symbol on the screen and their is a little circle on the bottom that keeps going in circles but nothing else is happening I can't see any programs or anything on the screen. I press the buttons on the keyboard but nothing is responding what can I do?

Greetings Jonathan,
Follow this article step by step. It is very comprehensive and covers this behavior: http://support.apple.com/kb/TS2570
Hope that helps!

Macbook turns on, but nothing on the screen

I had my macbook pro last september for my birthday, and until last night it had been working properly. but just tonight it won't start up! when i held the power button, the screen stays black although there is this normal sound when mbp's starting. I blind my way and click randomly (hoping to choose the username like i used to) and then the screen's all white-and-gray thing. Any idea why, and how, to fix this? also how much would it cost? thanks

nothing, my mouse just stops at the edge of my screen. but i have it mirrored. when i turn mirror off then my mouse goes of the screen but nothing happens on the display. i am going to take it in to the store tonight and see if they can send it back and fix it.
thanks
chris

My g5 2ghz tower turns on but nothing on screen

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