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Dell XPS M1210 won't boot after processor upgrade

Hi folks!
I've got a Dell XPS M120 with the Intel T2300E processor (1.6 GHz). Because it got slower over the years I decided to upgrade a few things. I upgraded the RAM which now consists of two 2GB units. Next I bought an SSD. Finally I wanted more processing power so I bought the Intel T7400 (2.16 GHz) which should be compatible.
I dismounted the whole laptop and installed the new processor, making sure I added enough thermal paste. I reassembled it and after turning it on, the following happened:

I pressed the power button. The lights go on for about 2 seconds, and then it shuts off again. The display remained off and the CPU-fan doesn't even start spinning. There is no power coming to the motherboard at all.

I thought that it could be that the BIOS needet to be updated so I re-installed the old processor. Sadly, the same thing happened.

Dear forum, please advise me what to do. I'm desparate. What could it be? Did I break the whole thing? Isn't there enough power (my battery's busted so I keep it plugged in to the wall)? Is the motherboard damaged? Or maybe the socket?
I love this laptop so much and I would love to see run with an SSD, more RAM and more processing power.

Thank you very much in advance!
4 answers Last reply Best Answer
More about dell xps m1210 boot processor upgrade
  1. Does it work if you put the old cpu back
    Where did you find out T4400 is compatible?
  2. @rgd - the OP wrote T400. He/she might have meant the 2400, which is the same package and same TDP.

    @eliphas - is that the actual model that you meant? Also, how was it mounted? That's a notebook machine, and in notebooks that CPU is usually mounted in a PBGA, which is soldered directly to the motherboard. Was it actually the pin version?
  3. WyomingKnott said:
    @rgd - the OP wrote T400. He/she might have meant the 2400, which is the same package and same TDP.

    @eliphas - is that the actual model that you meant? Also, how was it mounted? That's a notebook machine, and in notebooks that CPU is usually mounted in a PBGA, which is soldered directly to the motherboard. Was it actually the pin version?


    Yes it is a PGBA socket. I mounted it exactly as I did the original one. The model is an Intel Core 2 Duo T7400, upgraded from the original T2300E. I misspelt the model saying it was a T400. Excuse me for that, I will edit it in the original question.

    The problem is that after I installed the new processor and found out the motherboard wasn't getting any power, I reinstalled the old processor and the same thing happened. The laptop power light turns on for 1-2 second after I press it and then switches off again. The CPU-fan doesn't spin and the LCD-display stays completely black.
  4. Best answer
    t2300e is for socket M- compatible with m1210 while t7400 is for socket P, which is not compatible with your laptop model.
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