How to solve overheating, fans and not waking from sleep?
Hello :)
So since I installed Lion, I have the following problems with my MacBook:
1) overheating: often over 100ºC
2) fans over 6000 rpm even with temperatures <70ºC
3) often mac does not wake from sleep or does not go to sleep
I did a HardwareTest and got the following error:
"4SNS/1/40000000:TCOD-108.250"
I have resetted SMC, PRAM and NVRAM. The NVRAM reset seemed to help but after about 30min/1h the overfanning reappeared.
This is definitely a problem connected to Lion, but I can't go to the shop because my guarantee is over. I thought maybe updating Lion to its newest update (the 1GB update in the beginning of Feb 2012) would solve the problem, but it didn't.
I don't know what to do anymore. I read somewhere that maybe I should reset the PMU? I'm chickening out because it seems dangerous (that something in the Mac could be destroyed).
Could someone please tell me how to solve this problem?
Thank you SO MUCH.
PS. regarding the sleep, I think my computer is seriously confused, because when it goes to sleep, the light (white one in front of the Mac) gets turned on, and when I open the Mac, the light gets turned off.It's like it goes to sleep with the lid open and wakes up with it closed.... :/
PS2: I have a Macbook late 2008, 4GB memory, 2.4Hz
Is this a good question?
5 Comments
Hello Dan!
1) I cannot use another drive on my Mac, I have one partition only
2) Network Activity
Downloaded and ran MacScan and got no spyware.
3) I checked my activity monitor like you said.
[in the past I noticed that the programs that use a lot of CPU are Safari and Preview. So I'm trying not to use Preview that much and for Safari I have blocked Flash (I saw that as a recommendation on the internet).]
I closed all programs that were not essential. Tried to see if I had the updates on my most used programs. I also tried to identify some programs that were showing up on activity monitor and I think I may have solutioned the problem with the sleep. Apparently I had some files on queue on my printer. I deleted those and so far (since 1h) my Mac is going to sleep just fine.
Regarding the other programs on Activity Monitor, I don't know much of this stuff, so if you don't mind I'm posting them here and maybe you or someone else can see if there's something wrong there:
by Luisa
This is a txt file with information on my Activity Monitor.
Thank you so much!!
http://www.text-upload.com/read.php?t=90...
by Luisa
What are the last 3 characters of your serial number, please?
by ABCellars
ABCellars, the last 3 characters of my serial number are 8QT. Why is that relevant?
by Luisa
Late 2008/Aluminum - MB467LL/A - MacBook5,1 - A1278
by ABCellars