What does it mean when the screen flickers and flashes after 20min. of working fine? I have a Macbook Pro 17" screen and it's the late 2008 model
I am having trouble with a Mac book Pro 17 inch late 2008 Notebook.
When I turn it on and booted up it goes to desktop and everything is fine for about 20 minutes then after 20 minutes the screening starts rapidly flashing and flickering and everything on the screen locks up including the mouse becomes frozen.
What does it mean when this happens? Is it an issue with the monitor screen or is it some other internal hardware issue?
Run an Apple Hardware Test (extended version):
http://support.apple.com/kb/ht1509
Ciao.
Similar Messages
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What does it mean when you computer crashes and when you turn it back on it shows you a blank blue screen with a little folder and a question mark in the middle? It's a old imac from 1997.
I don't have original discs that it came with.
Then you still can use the second option with the keyboard combo I posted, called "resetting the PRAM."
Also when you way hold the c key down do you mean turn computer off and turn back on holding the c key?
Yes, or you can simply restart. As you don't have the CDs, this isn't on the plate any more.
The internal backup battery is not expensive and, in most iMacs is user-replacable. If yours has a tray-loading optical drive like this one:
it takes a major teardown to replace the internal battery. If this is the case, you'd be better off to leave the computer plugged in all the time; that eliminates the main reason for having a working battery.
If it has a slot-loading optical drive like this one:
things are much easier. The battery is visible through the RAM access door on the bottom of the computer case. The manual:
http://manuals.info.apple.com/en_US/iMacG3_2000UserManual.PDF
has sketches of how to access the RAM and therefore the backup battery. Unfortunately, the pdf on the manual goes up sideways on-screen and the RAM instructions are pretty deep into the manual. It's probably easier to scroll (for a while) to the section on adding RAM and print the applicable pages.
When you work on the battery, some sort of non-conductive pliers or large tweezer or forceps help unless you have tiny fingers. Make sure to note the polarity of the old battery and install the new one in the same orientation.
The battery itself is readily available. If price is no oblect, you can get it for a small rasom from Radio Shack Store ("Tandy" outside the US) as part number 23-026.
Online, they are dirt-cheap even after adding shipping. I buy backup batteries form this outfit:
3.6v Newer Technology Lithium 1/2 AA PRAM Computer Clock Battery -
What does it mean when the hard drive icon with arrow appears on screen on start up?
what does it mean when the hard drive icon with arrow below, appears on screen on start up?
it needs to clicked to select it as the startup disk......for the boot to continue...
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What does it mean when you call someone and it goes straight to the 3 beeps to mean cancelled
hi
what does it mean when you call someone and it goes straight to the 3 beeps to mean cancelled? this phone doesnt even ring, it just goes straight to the BEEP-BEEP-BEEP, its an iphone 4 and on IOS7 and it was ringing eailier on in the day when i spoke to this person. it wouldn't mean i have been blocked would it?
what does all this mean?
thanks
mrredrunner100i got my friend to message this person to see if they had the same problem, and the message went through and i think he got a reply, and all of a sudden this has started to work again (calls only) but apparently none of my messages went through that i have sent since the block activated. and they still havent even though there working again, and "apparently" a message was sent to me at 9pm today and it has never arrived. so imessage and text still isnt working, before i go asking this person about this, is this a genuine block or is there a phone problem?
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What does it mean when the message is green on imessage
what does it mean when the message is green on imessage
It is an SMS or MMS messages. iMessages have a blue background.
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TS3274 when my ipad is unfrozen, what does it mean when the apple is broken?
When my ipad is unfrozen, what does it meaN WHEN THE APPLE APPEARS BROKEN?
It appeared like part of the apple was sitting over next to the apple. I did not notice this before.
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What does it mean when the ipod is diabled and says connect to iTunes
what does it mean when the ipod is diabled and says connect to iTunes
It means...
Connect to iTunes on the computer you usually Sync with and “ Restore “...
http://support.apple.com/kb/HT1414
If necessary Place the Device into Recovery mode...
http://support.apple.com/kb/HT1808 -
I have 7 lights on my macbook. What does it mean when the first 5 light up when I click the button?
Run an Apple Hardware Test (extended version):
http://support.apple.com/kb/ht1509
Ciao. -
What does it mean when the screen shows only the time and the play button
what does it mean when i turn on my i-pod and it has a white screen and all it displays is the time and the play button cant get to the main screen to play music
Is the hold switch in the on position? Try resetting the iPod. To do this, press and hold both the Select/Center and menu buttons together long enough for the Apple logo to appear. The iPod may have simply locked up.
B-rock -
What does it mean when the error code says:
what does it mean when it says: cannot get mail-connection to server failed?
I'm talking about my Ipad 2It means that the iPad cannot connect to the company that serves your email to you.
This can be cause by incorrect settings on your iPad. But if you were able to get mail regularly iprior to this on your iPad it could be a problem with your email provider that is causing the problem.
We're you able to get your email previously with the same device? -
What does it mean when you call someone and your phone suddenly saids "end call"?
I tried calling a friend but the call didn't go through and instead it said call ended on my phone with 2 beep tones, what does this mean?
The call simply did not go through. It happens with cell phones.
Call again. -
I'm using SQL Server 2008 R2 (10.50.4033) and I'm troubleshooting an issue that a select query against a specific view is taking more than 30 seconds consistently. The issue just starts happening this week and there is no mass changes in data.
The problem only occur if the query is issued from an IIS application but not from SSMS. One thing I noticed is that sys.dm_exec_cached_plans is returning 2 Parse Tree rows for the view - one created when the select query is issued
1st time from the IIS application and another one created when the same select query is issued 1st time from SSMS. The usecounts of the Parse Tree row for the view (the IIS one) is increasing whenever the select query is issued. The
usecounts of the Parse Tree row for the view (the SSMS one) does not increase when the select query is issued again.
There seems to be a correlation between the slowness of the query and the increasing of the usecounts of the Parse Tree row for the view.
I don't know why there is 2 Parse Tree rows for the view. There is also 2 Compiled Plan rows for the select query.
What does the Parse Tree row mean especially the usecounts column?>> The issue just starts happening this week and there is no mass changes in data.
There might be a mass changes in the execution plan for several reason without mass changes in data
If you have the old version and a way to check the old execution plan, and compare to the new one, that this should be your starting point. In most cases you don't have this option and we need to monitor from scratch.
>> The problem only occur if the query is issued from an IIS application but not from SSMS.
This mean that we know exactly what is the different and you can compare both execution plan. once you do it, you will find that they are no the same. But this is very common issue and we can know that it is a result of different SETting while connecting
from different application. SSMS is an external app like any app that you develop in Visual studio but the SSMS dose not use the Dot.Net default options.
Please check this link, to find the full explanation and solutions:
http://www.sommarskog.se/query-plan-mysteries.html
Take a look at sys.dm_exec_sessions for your ASP.Net application and for your SSMS session.
If you need more specific help, then we need more information and less stories :-)
We need to see the DDL+DML+Query and both execution plans
>> What does the Parse Tree row mean
I am not sure what you mean but the parse tree represents the logical steps necessary to execute the query that has been requested. you can check this tutorial about the execution plan: https://www.simple-talk.com/sql/performance/execution-plan-basics/ or
this one: http://www.developer.com/db/understanding-a-sql-server-query-execution-plan.html
>> regarding the usecount column or any other column check this link:
https://msdn.microsoft.com/en-us/library/ms187404.aspx?f=255&MSPPError=-2147217396.
Ronen Ariely
[Personal Site] [Blog] [Facebook] -
Using Firefox 17.0. When I click on "Bookmark a Page" under the star in the dialogue box that appears it may say "Remove Bookmark" or "Remove 3 bookmarks." What does it mean - will it really remove three bookmarks?
'''Try the Firefox Safe Mode''' to see how it works there. The Safe Mode is a troubleshooting mode, which disables most add-ons.''
''(If you're not using it, switch to the Default theme.)''
* You can open the Firefox 4.0+ Safe Mode by holding the '''Shift''' key when you use the Firefox desktop or Start menu shortcut.
* Or use the Help menu item and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
''Don't select anything right now, just use "'Start in Safe Mode"''
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before using the Firefox shortcut (without the Shift key) to open it again.''
'''''If it is good in the Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one.
Please follow the [[Troubleshooting extensions and themes]] article for that.
''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.'' -
What does discard mean when the NewAsyncTimer functions count elapses?
I have a PXI system with a PXIe8101 controller running with a real-time OS. I am having trouble with the asynchronous timer. I have a question about the count parameter in the function NewAsyncTimer(). The documentation says " Specifies teh number of timer events to be generated before the timer is automatically discarded."
What does it mean by "discarded"?
Does this mean it is "discarded" like when you call the function DiscardAsyncTimer() and it removes it from the list of existing timers?
Another question?
I created my timer like this:
gRegCalMainLoopID = NewAsyncTimer (1e-03, -1, 0, RegCalProcessCntrlLoop, 0);
I belive this will set the priority to THREAD_PRIORITY_HIGHEST (2).
Since I set the initialState parameter to 0 it should not make call the call back function until I set teh ASYNC_ATTR_ENABLED to 1.
I send a command to do this and it makes this call:
timerStatus = SetAsyncTimerAttribute( gRegCalMainLoopID,ASYNC_ATTR_ENABLED,1); // this starts the timer interrupt
My problem is the timer function is never called with teh event = to EVENT_TIMER_TICK.
Here is my timer callback function:
int CVICALLBACK RegCalProcessCntrlLoop (int reserved, int timerId, int event, void *callbackData, int eventData1, int eventData2)
switch(event)
case EVENT_TIMER_TICK:
The only other timer I have running in my system is in RTmain(). But it should be at a lower priority so the higher priority timer callback should not get blocked.
Her is part of my RTmain()
void CVIFUNC_C RTmain (void)
if (InitCVIRTE (0, 0, 0) == 0)
return; /* out of memory */
/*************************** Initialization code. ****************************/
gDone=0; // when it is set to one the application is exited.
// create callback timers
CreateCallbackTimers(); // here is where I call the NewAsyncTimer() function above
// initialize DMM digital multi-meter
init_dmm();
init_pxi_gpib();
/*********************** END OF Initialization code. *************************/
while (!RTIsShuttingDown () && !gDone)
/* Your code. */
/* Sleep for some amount of time to give the desired loop rate */
/* and to allow lower priority threads to run. */
SleepUS (100);
ProcessSystemEvents ();
Any ideas what might be going on?Hi DPearce,
It does seem that the timer will be discarded in the same way as DiscardAsyncTimer meaning that the timer will no longer be registered or active after being called a specific number of times. Is there a specific aspect of the count parameter that you are curious about?
For Real Time systems a priority level of 2 is not necessarily the Highest Priority Thread and more information can be found in the help topic NewAsyncTimerWithPriority.
Have you seen if you are able to capture the Event Discard event as well?
Milan -
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Its usually on the house power when its on the desk, and it has been connected all night. So what does this mean? I have had this machine about 2 weeks, and should not have to replace a battery this soon.
When do you see this message?
Any error codes?
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