IMac :: System Shutdowns Randomly / Handbrake Or Bad Memory?
Aug 4, 2009
Does anyone know if there is a certain temperature that causes iMac's to shut down? I have been queuing up a number of movies in Handbrake and letting the iMac chomp away at them. For several months this was not an issue (this is a 2009 iMac 2.93 base model, no upgrades.) For the last week or two, I have come back to find the computer off a number of times.
Every time it has done it i was while Handbrake had the processor pegged at 100% for a long time. The 3 highest temps are usually the power supply, the Northbridge and the CPU and the highest I have seen them is right around 70C. Last night I did some messing around with that fan control program and got the fans to run higher while Handbrake was running.
I managed to keep all of the temps below 65C. I am going to leave it like this for a while and see if I have any more problems. I'm also going to try to cut back on the number I queue up at a time. I was setting up enough to keep it going for 12-14 hours. I don't actually think it was a time thing though as last night it shut down while my wife was using it and it was less than 2 hours after I started a batch.
Has anyone else had similar experiences? I see some people suggesting it could be caused by bad memory, but as mine only seems to happen with Handbrake at 100%, I'm thinking it's just heat.
Ive been experiencing multiple shut downs, particularly while streaming video from the internet. I think it may be overheating..anyone else have this problem? Running a MBP 2.16CD with snow leopard Also, I'd like to add I just experienced something weird. It was a shutdown, but it was like a shadow melting over the screen, then it said you must restart the computer in a few different languages. What's that about?
I have an original MacBook Pro 15" (A1150) that randomly shuts down. Seems to be running very hot. I've already had to replace a bulging battery, and TechTool Pro has indicated a temperature-related S.M.A.R.T. failure with the HD.
If I downgrade the HD from 7200 RPM to 5400 RPM, will that help with the heat issues? Any other heat-related fixes? I know the 13" MacBook Pro suffered a random shutdown syndrome, but I didn't know if the 15" was affected too.
has anyone tested out handbrake on their i7? I'm still waiting on my i7 but was curious just how fast a 2 hour DVD would take on handbrake for a mp4 appleTV format...
So I have an old imac running OSX 10.3.9 and recently it started making a whoosh sound randomly at will. It sounds like a whiffle ball bat missing the ball. Also for no apparent reason it started saying "you have logged in" every time I wake it up. Any clue how to make these annoying sounds go away and or what may have started them?
Looking at MacBooks, iMacs and Mac minis with the NVIDIA GeForce 9400M graphics, which share memory with the main system. I notice on all 2GB machines the graphics has 256MB of SDRAM and the machines with 4GB the graphics has 512MB. Does this mean if I bought a base model mac mini, with 1GB memory and 128MB SDRAM, increased it to 4GB of memory, I would have 512MB of shared video SDRAM?
What would show more immediate quality of graphics and faster on-line refresher rates, a graphics card with more ram or double the memory? Im debating whether to get the 512mb ATI Card or an additional 4 gig or Memory with my new iMac.does Apple not offer the really high end ATI Cards with 1 gig of ram?
After owning my Imac for about 12 months or more now I've noticed lately that it has become much much slower. I expected it to slow down just like all computers once you have used up a fair bit of memory space but I haven't used up much at all. I've tried to avoid using up too much space on my Mac by using an external storage drive but I'm wondering if that has the opposite effect? I've got the usual apps that help the Mac to run efficiently and I've followed various threads that show how to optimize the mac so I'm assuming there isn't all that much tweaking left to do... could be wrong though. A long time ago (i'm not sure what got into me) but I downloaded the apple developer software, I don't intend on using it but i don't what the correct names of the apps are and I don't want to uninstall the wrong stuff. I have tested the speed of my Mac with and without the external memory drive but didn't find much difference, but perhaps my tests weren't entirely accurate.
I have a BluRay rip in an MPG format.. Whenever I load it into Handbrake, Handbrake crashes. Is there any other application I can use to convert it to MP4?
I bought this in sept. of 08. The 24'' 2.8 ghz interl core 2 duoMy mac came with 2gig 800 hmz DDR2 SDRAM. what are good places to upgrade to 4 gigs. I have $200 in amazon gift cards, so that seem to be the front running. Do I need a certain brand or will any brand work as long as its ddr2 sdram?
i have downloaded handbrake and vlc, when i try to rip a dvd i have made with imovie, handbrake says (please install vlc). how do the two programs work together? or what am i doing wrong.
I use handbrake to rip movies to TV files (.m4v). Is there a way to reverse this process? Say I don't have the DVD anymore, just the .m4v file, and want it to be able to play in any DVD player. Does anyone know a way to convert the .m4v back into video_ts/audio_ts files?
I have a iMac and a Macbook (unibody before they became "pro"). Both are 2.4Ghz models with 4Gb of RAM. I think the iMac has a slower system bus, but they are pretty close otherwise.
I can rip DVDs and convert videos on the Macbook all day long without problems. But Handbrake always quits unexpectedly on the iMac. I have downloaded the latest version of Handbrake, uninstalled several times, and totally leave it alone while running Handbrake. Nothing prevents this from happening.
Does anyone know what could be causing this problem or another (free) program that will do what Handbrake does as easily? I officiate basketball and I have a lot of friends who are asking me about pulling clips from game DVDs. With Handbrake it is easy to rip the DVD and trim the clip using Quicktime.
I have a 2009 8 cores 2.66Ghz Mac Pro with 16GB RAM and ATI Radeon HD 4870. It keeps waking up randomly from sleep. I have tried quitting all applications before sleeping, but it still woke up from sleep by itself. Anyone has nay idea why it kept waking up randomly?
However Safari is causing all kinds of hangs restarts kernal panics overheating with my machine and yet if I use google chrome for the exact same web sites these same problems are not present. I much prefer to be able to keep using safari and I realise that I haev not got the most up to date software since Lion is not supported on my machine but it is as up todate as snow leaopard allows.
I also realize that a more than 5 year old machine is doing very well especially since it is rarely off. It has outlasted 2 timecapsules and countless airport express but the anomyly between 2 browsers is weird. I doubt this has a solution but maybe the odd apple tech who read this might find it a challenge to know why one browser causes heart issues but another doesn't.
My Macbook is 1.5 years old (13in, white, 2 GHz). About two weeks ago, it would randomly shut off. It would restart fine, but shut off sooner. Sometimes, it wouldn't even restart. Now, it's at the point where when I power it on, it rarely restarts past the white apple start-up screen.
My thought is that it is overheating. Are there any more ideas? What can I do to save my macbook?
I just received my 3rd replacement mac pro, the second one (same spec, apple replaced it for me) is here too. I'm trying to get the 'new' one up and running. They are both identical spec - stock Octo 2.8, with 8800GT, 500GB HD, and Airport.
Anyway, I bought a 750gb Samsung F1 on the 'old' mac pro and installed my OS and all my audio software and plugins on there. The 500GB drive holds only the audio data (no OS). Is it OK to just remove one boot drive from the 'old' mac pro, and put it in the new one? The are both the same spec machines...
The reason i ask is because i am getting very scary and random SHUTDOWNS on the new mac pro, all of a sudden - it will turn off, then briefly (for half a second) the fans will spin again, then it will die. It is as if something is tripping the power off, or messing with it at least. It's done it several times now. The first time i was doing a time machine backup, came back to the computer an hour later, and it was off completely. It wouldn't start for a while, then all of a sudden, it did on its own, a couple of seconds after i tried pressing the switch.
I tried to run the apple diagnostic test, and shut down after a minute or so. So i took out the stock 500GB hard drive (only the 750GB left in it now) and i'm running it again. We'll see what the results are. But anyway, has anyone done this? It should be ok to take the drive out and put it back in, right?
recently my mac pro has been randomly freezing then all 3 of my screens go blue for 5 seconds, then everything is back to normal. This happened 2 months ago, and eventually my graphic card died. I dont know whats causing this, I have tried different cards so i no its not hardware. Anyone have this happen? Any fixes?
I have a problem... I use very processor heavy programs on my iMac G5 and up until about a year ago, I was getting along ok. Here's the gist of it:
1) World of Warcraft/ProTools etc. Prolonged use over many hours eventually caused my imac's fan noise to be unbearable. Even worse, my imac began randomly shutting down almost predictably during high processor use.
2) Was taken to an apple store (while in warranty) and only thing said was that it needed a new logic board. No explanation what actually happened to it. Logic board replaced. Few months later, it's happening again.
3) I am now outside an apple warranty and it will cost me $400+ to get it repaired. It is functional for regular internet use, but on sites like youtube, after a few videos it will likely shut down.
I have opened up my computer several times to inspect the capacitors, but they all look like new. I realize overuse is probably the problem, but if there is a fix I can do myself, I'd at least like to try. The problem is that I have no idea what to do I hate hearing "needs a new logic board" instead of "this part ____ needs to be replaced/fixed"
Specs: iMac G5 17" 2.0ghz generation right before isight macs.
recently my ibook keeps randomly locking up, it first started the other day when it got stuck on a blue screen at start-up eventually it came on, but kept locking up, no spinning beech ball just completely froze, i held down the power button to turn it off, i then had to wait at least ten minutes before trying to start up again, if i didn't it would get stuck on the blue screen, then something else weird happened, when i started up it came up with the mac set-up assistant similar to when you first upgrade, so i turned it off again and it went away, so i started up again this time i noticed that spotlight was indexing, despite it already doing that ages ago when i upgraded to leopard, so i thought this had something to do with it, because it kept freezing in the process, but today i turned it on, let it index and to my surprise it didn't lock up, so i went to play world of warcraft, and as soon as the login screen came up it locked up agai
I have had several issues with the USB on my brand-new Core i5 macbook pro. It randomly disconnects USB devices. I've had the issue with multiple USB devices - same story with each one. Further, iTunes will only recognize my iPhone if it is in the port nearest the magsafe connector. The other port fails to recognize my iPhone entirely. Anyone else having a USB issue on their base 15" that was released today?
Furthermore, any suggestions of what to do about it? I'm having a hell of a time restoring my iPhone with this issue... And the Apple Store is over an hour away-I planned a special trip to buy this laptop.
when I go to memory in system profiler for my mac pro it coms up with serial number manufacturer,pn,is this correct info?im having amnesia about this jsut want to clarify if this info always shows up
Can I add more memory to my system? I've heard going from 8 GB to 16 GB can make a difference. When I bought the system, 8 GB was the maximum memory configuration.
So I have a Mac Pro, quad core xeon with 12 GB of RAM.
I have noticed that when I watch videos, usually from YouTube but elsewhere also, the video is very choppy and the overally computer performance becomes laggy. I thought it was Flash, so I deleted flash and switched my youtube preferences to HTML 5. No change.
So I bust out activity monitor, and it doesn't seem to be a CPU issue, but I note that the VM size is 200-400 GB. That seems excessive. I've about 80 GB available free space on my startup drive; I can move some stuff to another drive to create more free space if that's the issue. But is that much VM normal in 10.7? It seems like a lot.
