My iMac screen just came on white, I can hear it running in the background
My iMac was in sleep mode, click in on, screen was snowy color and stripes. Turned it off and back on again. Got white screen with Apple logo, then nothing, sounds like it is running in the background. Help.
I just had a similar experience with my iMac - late 2009. Ty unplugging it and let it sit for a while.
Heavy duty vacuum popped circuit breaker of my office. All off. Lot's of hard drives, printers and the iMac.
On reboot - white screen - no Apple logo though. Just let it sit and nothing. So restarted over and over and let sit to boot for even an hour. Never came back. So I went to Apple store and bought a iMac 5k. Came home - before unboxing - restarted the iMac again - white screen. OK, SO I setup my new iMac. Moved the old iMac to floor, unplugged and went about my business and figured I would take old iMac apart in a couple of days.
So about 4 days later, I plugged the iMac in - and it booted like nothing happened! ***? It was working fine. I did wipe the drive and reinstalled Yosemite. Still all fine.
Weird one for me.
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My iPod touch screen just turned a white-ish green color and I can't turn it on or off. I can't connect it to iTunes, and the back is too scratched up to see the serial number so I have no way of getting it. Can someone tell me how to fix it? Please tell me quickly! I was right in the middle of something!
Did you try a reset?
iPod touch User Guide (For iOS 5.1 Software) -
HT1338 i cant get in to os system. the screen just stuck in white screen and apple logo
i can not get in to my os system. the screen just stuck in white screen and apple logo
Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a boot failure is to secure your data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since your last backup, you can skip this step.
There are several ways to back up a Mac that is unable to boot. You need an external hard drive to hold the backup data.
a. Boot into the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.”
b. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
c. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to boot, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can boot now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
If you've booted from an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.
Step 3
Boot in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you boot in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, your boot volume is damaged and the drive is probably malfunctioning. In that case, go to step 5.
If you can boot and log in now, empty the Trash, and then open the Finder Info window on your boot volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then reboot as usual (i.e., not in safe mode.)
If the boot process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 4
Sometimes a boot failure can be resolved by resetting the NVRAM.
Step 5
Launch Disk Utility in Recovery mode (see Step 1.) Select your startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then reboot as usual.
Step 6
Reinstall the OS. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 7
Repeat step 6, but this time erase the boot volume in Disk Utility before installing. The system should automatically reboot into the Setup Assistant. Follow the prompts to transfer your data from a backup.
Step 8
A dead logic-board battery in a Mac Pro can cause a gray screen at boot. Typically the boot failure will be preceded by loss of the startup disk and system clock settings. See the user manual for replacement instructions.
Step 9
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store to have the machine tested. -
My old iMac (screen sits on a white dome) opens with a tiny folder that flashes a question mark, instead of a login to user's desktop, when booting up after a forced shutdown. How do I get my operating system working again? Thanks --Jim
The blinking question mark indicates that the firmware could not find a valid Operating System on your machine.
Your harddrive may have failed. Your filesystem may have be come corrupted.
Try these things.
-- try to boot up from the installation disc.
The startup manager will list all of your bootable partitions then give you a choice of which to boot. Hold down the option key then power on. Continue holding down the option key until you see the startup manager. This brings up the startup manager. Click on your hd or disc. Click on right arrow key.
-- Sometimes if volumes don't appear in Startup Manager (what you get when you hold down the Option key at startup), you need to reset the Mac's PRAM, NVRAM, and Open Firmware. Shut down the Mac, then power it up, and before the screen lights up, quickly hold down the Command, Option, P, and R keys, until the Mac has chimed twice more after the powerup chime.
Then, before the screen lights up, hold down Command-Option-O-F until the Open Firmware screen appears. Then enter these lines, pressing Return after each one:
reset-nvram
set-defaults
reset-all
"The reset-all command should restart your Mac. If so, you have successfully reset the Open Firmware settings."
http://support.apple.com/kb/TS1812?viewlocale=en_US
Should the fail...
Try taking the battery out for 10 minutes. Put battery back in. Cross fingers. Power the machine back on.
How to eject a cd from the internal cd drive:
eject cd
List of devices:
devalias
List of variables:
printenv
More than you ever wanted to know about open firmware
http://www.firmworks.com/QuickRef.html -
My screen just randomly turned white
My screen just randomly turned white. But I can still hear the video. After turning it off by pressing the power button, when turned back on the screen flickers. What should I do?
First off, it would help to know what you're talking about. What turned white? The iPod? The iPad?? A Mac??? Which kind of Mac???? What were you doing, and what have you done since? You really don't give us much to work with.
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my screen just turned blank white randomly and now it won't turn off/reset or connect to a computer or really do anything... need help.
Try:
- iOS: Not responding or does not turn on
- Also try DFU mode after try recovery mode
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
- If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
- If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
Apple Retail Store - Genius Bar
Some other users have had the same problem -
IMac screen flashes black and white when returning to top sites or screen saver
iMac screen flash black and white when returning to top sites or before sleep...any ideas why?
Howdy OatsaMae,
It sounds like your screen is flashing unexpectedly on you for some reason. I would recommend this section from the following article to help you get that resolved, named:
Apple computers: Troubleshooting issues with video on internal or external displays
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.
Thank you for using Apple Support Communities.
Take care,
Sterling -
Apple macbook pro with retina display is having yellow screen problems in which screen is not perfectly white and is yellowish. More over the service frm apple's part is ridiculous as they have faulty spare part. Does ne1 hv email of senior person?
Apple service centre employee told me that they do not have this 14 day offer in India.
And My mac book pro is taken in by Service centre people to run test etc and I will be informed the next day if they accept it as a fault or not ?
I feeling ridiculously bad. -
My iMac 27inch screen keeps going black but everything is still running in the background? please help. I have read that apple are recalling 27inch iMacs....
Hello @DesCherryBomb,
I understand that you are having issues with your HP 2310m monitor going blank and/or flickering. I am providing you with some steps you can try below:
Step 1. Unplug the power cord from the back of the monitor and the wall
Step 2. Hold the power button down for at least one minute
Step 3. Plug the power cord back into the monitor and then into the wall outlet (not a power bar or surge protector)
Step 4. Press the Menu button on the monitor
Step 5. Navigate to the Factory Reset option and select it
If the above steps did not resolve your issue you can try the monitor on a computer or other device to see 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
Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter -
I just bought an imac in september 2012. And i just find out that my microphone is not working. So i did an apple hardware test and with no problems found? I have sound but no one can hear me, not even the computer. Should i bring it back to the store
Before you go through that trouble open About this Mac > More Info... > System Report > Audio and see if the system actually knows it has a microphone. Then you can look into Applications > Utilities > Audio MIDI Setup and see if the microphone is there, select it and make sure the sliders are set to full. Then in System Preferences look for Sound > Input and make sure it shows up there and the sliders are at least half way up. If none of that works do a
SMC RESET
http://support.apple.com/kb/HT3964
Shut down the computer.
Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
Attach the computers power cable.
Wait another 5 seconds and press the power button to turn on the computer.
It is the 5 second timing that initiates the reset.
then go through the process of looking for the microphone again as the reset may reenable the mic. -
I just got an IPAD2 on Saturday. With the Mac, I could always tell when programs were open/running by going to the menu bar. How can I tell what programs are running in the background. I am struggling with not being able to go to a menu bar at the top
You can see which apps are open and/or recently used by double-clicking the home button to bring up the taskbar at the bottom of the screen (not all apps that appear there are active) - you can then close apps on it by pressing and holding one of them for a couple of seconds or so until they start shaking, then press the '-' in the top left of the Mail app to close it, and touch any part of the screen above the taskbar so as to stop the shaking and close the taskbar. If you have an app 'open' on-screen then it won't appear on the taskbar, you will need to go back to the homescreen first, and it should then show when you next open the taskbar.
If you haven't already got a copy then you can download the iPad manual from here : http://support.apple.com/manuals/#ipad -
The application does not use the screen and run in the background
Hi
I have downloaded a package of j2me Midlet
from [link] here [link]
and try to reuse the code
but I get the following error when running the code:-
The application does not use the screen and run in the background
I think the error into one of these two classes
package main;
import javax.microedition.midlet.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.media.Manager;
import javax.microedition.media.MediaException;
import javax.microedition.media.Player;
import java.io.IOException;
import java.io.InputStream;
public class MainMidlet extends MIDlet implements CommandListener {
private SSGameCanvas gameCanvas ;
private Command exitCommand ;
private Player player = null;
public void startApp() {
try {
// create new game thread
gameCanvas = new SSGameCanvas();
gameCanvas.start(); // start game thread
exitCommand = new Command("Exit",Command.EXIT,1);
gameCanvas.addCommand(exitCommand);
gameCanvas.setCommandListener(this);
Display.getDisplay(this).setCurrent(gameCanvas);
catch (java.io.IOException e)
e.printStackTrace();
try {
// start sounds
InputStream in = getClass().getResourceAsStream("/resource/startfly.wav");
player = Manager.createPlayer(in,"audio/x-wav");
player.setLoopCount(1);
player.start();
catch (MediaException ex)
ex.printStackTrace();
catch (IOException ex)
ex.printStackTrace();
public void pauseApp() {
public void destroyApp(boolean unconditional) {
if (player != null) {
player.close();
System.gc();
public void commandAction(Command command, Displayable displayable) {
if (command == exitCommand)
destroyApp(true);
notifyDestroyed();
package main;
import java.io.IOException;
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;
public class SSGameCanvas extends GameCanvas implements Runnable {
protected GameManager gameManager;
protected boolean running;
private int tick=0;
private static int WIDTH;
private static int HEIGHT;
private int mDelay = 20;
Form mainForm;
Display display;
//private int MaxTime;
public SSGameCanvas() throws IOException{
super(true);
gameManager = new GameManager(5,5,getHeight()-10,getWidth()-10,this);
public void start() {
this.running = true;
Thread t = new Thread(this);
t.start();
public void stop() {
running = false;
public void render(Graphics g) {
WIDTH = getWidth();
HEIGHT = getHeight();
// Clear the Canvas.
g.setColor(0, 0, 50);
g.fillRect(0,0,WIDTH-1,HEIGHT-1);
// draw border
g.setColor(200,0,0);
g.drawRect(0,0,WIDTH-1,HEIGHT-1);
// draw game canvas
gameManager.paint(g);
public void run() {
while (running) {
// draw graphics
render(getGraphics());
// advance to next graphics
advance(tick++);
// display
flushGraphics();
try { Thread.sleep(mDelay); }
catch (InterruptedException ie) {}
public void advance(int ticks) {
// advance to next game canvas
gameManager.advance(ticks);
this.paint(getGraphics());
}Edited by: VANPERSIE on Jul 10, 2012 12:26 PMHi Andi,
Thanks for your reply.
Yes, I have waited for a while and the result doesn't change.
The Porblem here is the application is seen started in visual administrator.Only restart brings up the page back.
Can you please suggest anything.
Thanks and regards
Nagaraj -
Camera running in the background; won't close
My phone wiped itself today. Finally got it back up and running: now the camera shows to be running in the background but when I click on it it won't come up. I can't close it! Anyone have any shortcuts or tips/something? My ringtones won't play as long as the camera is up and it really sucks
Curve 8900
v5.0.0.1007My phone wiped itself today. Finally got it back up and running: now the camera shows to be running in the background but when I click on it it won't come up. I can't close it! Anyone have any shortcuts or tips/something? My ringtones won't play as long as the camera is up and it really sucks
Curve 8900
v5.0.0.1007 -
My special characters screen for pages is running in the background no matter what I do. It randomly pops up and then goes away. I can't close it even though I have closed pages and restarted my computer. How can I stop this.
Try trashing the .plist with CharacterViewer in its name in Home/Library/Preferences. To get to Home/Library you may need to hold the option key down while you do Finder > Go.
-
How do i keep the aps from running in the background on my iphone 4s? Just downloaded the new version
If you're talking about closing running apps, they changed it up a bit from iOS6. Now you just double click the home button to bring up the running apps, side scroll to the app you want to close, then just swipe up.
= L.I.
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