I have an issue with my dearest mac
Its Mid 2009 white macbook, 2,13Ghz intel core duo, 2 Gb RAM, Nvidia 9400M GPU.
It was working like a charm for 3 yrs and few days ago it started to overheat (GPU),
When i press him up (with a game or HD youtube) temperature of CPUs rise to 85-87 Celsius and GPU to 95 Celsius, thing is that GPU is setted to underclock when it hits 95 degrees so it hits FPS in game (to unplayable). Game was working fine on it for years. But its not only a game problem its now affecting every harder pressure on CPU or GPU on youtube for instance fan still can keep it under protection zone of GPU 95 degrees, but any heavier load than that couse GPU to underclock.
I run bootcamped XP proffesionall but problem with overheat is on both OSs just in OSx it needs more time to get to dangerus point.
All temp sensors are working fine (i can see their readings normaly)
One thing that looks suspicous is that i see fan hit over 3,5k RPM when CPU is over 70 celsius. But thing is that it cant cool it off even when its on 6200.
There is no obvius problems with GPU (except that overheat).
Idle (with safari on ) temperatures:
CPU core 1: 49C
CPU core 2: 45C
CPU A proxlimity: 46C
CPU A Temp diod:50C
Northbridge chip: 57C
Northbridge position 1:48C
All temps seams regular untill i start heavier work.
Hardware test says everthing is OK.
Things i have done so far:
- Cleaned dust from board, fan and under the board
- Changed thermal compound (MX2) (3 times
- Reinstalled XP and OSx (fresh install both)
- Updated all drivers on bot OSs
- Reseted all rams and SMC
Acording to programs fan spins on 6200RPM like it suppose to run.
Any help or idea is welcomed since im kinda out of clue what could be problem.
Thnx in advance.