Replacing laptop cpu

[Ronal B Morse]

I still like my guess better, but it's your machine and your money. Keep 
us posted.

RBM



On 05/24/2015 01:51 PM, jd1008 wrote:
>
>
> On 05/24/2015 12:49 PM, Ronal B Morse wrote:
>> On 05/23/2015 11:03 AM, jd1008 wrote:
>>> I have an HP laptop with
>>> AMD Turion II X2 mobile processor RM-72 / 2.1 GHz CPU, Socket S1.
>>> It is now causing blue screens in windows and freezes
>>> linux (pclinuxos, knoppix, fedora live).
>>>
>>> I have run the x86 mem test for more than a day, and
>>> found no problems with the 4GB ram (2GB X 2).
>>>
>>> I am wondering why the memtest does not freeze????
>>> could it be that only one core is causing the problem?
>>>
>> I think an earlier poster in this thread (Vacelaevus) might have 
>> identified a likely problem.
>>
>> A few years ago there were a number of HP laptops sold with defective 
>> G8400/G8600 series nVidia graphics chips...out of spec solder or 
>> something as I recall. The symptoms were as you described...the 
>> machine would work normally for a period of time and then 
>> unexpectedly blue-screen, especially under heavy load. In some cases 
>> the problem occurred only intermittently. In some cases, the machine 
>> would appear to work normally after they had been allowed to cool down.
>>
>> In your specific case, memtest doesn't put a very heavy load on the 
>> GPU, so it may not have warmed up sufficiently for the problem to 
>> manifest.
>>
>> If your laptop has an nVIdia G8400/G8600/G9200/G9400 series GPU it is 
>> highly likely that is the cause of the problem and replacing the CPU 
>> will not help. The only recourse is to replace the entire motherboard 
>> as the GPU is not user replaceable.
>>
>> The HP customer service website for your model laptop may contain 
>> additional information.
>>
>> RBM
> But this machine had been working for years without this recent issue.
> So, I kind of dounbt it he the graphics chip issue.
> It's history included the death of the cpu cooling fan, which I replaced.
> The laptop belonged to a friend at the time. She sent it to me to fix.
> I replaced the cooling fan with an identical one specified by the same
> manufacturer and model number on the dead fan.
>
> After fan replacement, it started having this intermittent problem.
> So, I am led to strongly suspect that overheating may have caused
> the problem before I even put in the new fan.
>