Core 2 Duo T5200 ([email protected]) Stuck at [email protected] ....PLEASE SOLVE THIS ISSUE

System Information:
Dell Inspiron 640M/E1405
CPU : C2D T5200 @1.60GHz
OS : Win7 x64
RAM : 2x 1GB DDR2 667Mhz working @533MHz due to CPU FSB
HDD : 80GB 5400rpm 8MB cache


Current Condition:

Battery not working/dead, hence removed
CPU FAN connector on mobo had issues since jan'13, hence took out FAN & powering it via USB & I've placed it near exhaust vent for cooling of heatsink
Since the day FAN connector on mobo had some problem, CPU is working on 800MHz only (I used CPU-Z for checking clock speeds)
If I do Clean install of win7 on a Fully formatted clean HDD then for initial few mins I can see it working on 1.60GHz but after that 800MHz only, whatever you try, nothing works.
by reading in some forums, i removed CMOS battery for few mins n placed it back, then also i saw CPU working on 1.60Ghz for few mins after getting on to desktop but after few mins, back to 800Mhz & It is still
Disabling speedstep will make it run at lowest frequency i.e 800MHz (Clearly written in BIOS)
Hence SpeedStep is enabled right now

PS:
I dont have any problem if the CPU runs at [email protected] (rated freq & voltage) all the time....thats acceptable for me

Please Please!!!!! Help me solve this issue!!!!!!!

 

Get a bigger power adapter? Maybe your current one cannot supply enough watts.

 

I would check out the temps on the processor. Get a program like hwmonitor to see your temps. I would beat the cpu is down clocking from overheating. Maybe also clean the heat sink if you haven't.

 

hmmmm, may be..... possible
also I'm a heavy user, sometimes i leave my system running continuously for some days

also i would like to mention one thing, the day mobo fan connector went dead, since that day only, CPU running at low frequency
there are three wires for FAN with colors as follws ( POWER, NEUTRAL, MAY BE SPEED CONTROLLER)
right now yellow colored wire is not in use as i have connected fan externally via USB & placed outside laptop near exhaust vent
will there be any relation with the connector on mobo? just may be it is detecting as if FAN is not there present in system due to dead connector, & hence it is under-powering CPU to prevent it from getting heated to save it?
IF YES then what should I do to make system believe that FAN is present there? likewise virtual BD-ROMs by Daemon Tools

idle/min value 31~33*C......full load value 42*C max. for both cores.....so low values because cores are under-powered & fan is running at full speed all the time.

 

My guess would be that the mobo is not seeing any CPU fan present or it is reporting the fan running at its lowest possible speed and as such is throttling the CPU to "prevent it" from hitting dangerous temps regardless of actual CPU temps. Unfortunately, short of soldering a new connector and plugging the fan back in, I don't really see a solution to this problem.

 

On a different note, there are machines which will not allow the CPU to run at full speed unless a working battery is present.

 

Sounds like you need to fix your connector and get the fan working as normal.

Yes, strangely my MSI GE60 tries to do that but seems able to run full speed just fine without the battery. I could understand doing that when the battery is used to supplement the adapter supply for extreme loads but that doesn't seem to be the case here.

 

My understanding is that OP is dealing with a Dell...

 

I answered the OP's question first and then remarked on your statement second. Was it inappropriate?

 

I'm not the one who decides what's inappropriate around here...:hi2:...but I wouldn't say that it was.

Confusing, yes.

Nevermind.

 

Ummm, okay. I was just suggesting if it were the battery it may be possible to override that feature but it seems clear that the Op's problem is fan induced.

I take it the connector is external to the laptop and not the fan itself.

Not sure what "issues" mean with the connector but repairing it would be the best option IMO. Other than that maybe modifying the fan table so the temperature is set much higher before turning the fan on. Of course the fan is running all the time with a separate supply but the EC doesn't know that. Maybe if the tables were set for the fan to come on only when above 90C say then the controller would be happy with no feedback from the fan as it hasn't tried to turn it on.

 

Yeah right....I'll try to repair it from local repair shop & then will give you feedback

Original Battery lasted for 2 years. Then i bought a compatible (duplicate) one for half cost & luckily it also lasted for 2 years but then dead battery started interfering with the performance of system, removal of battery actually made it perform normal.......hence I kept it as it is & it was working fine for almost 6 months after that incident

yup, will do it as soon as I get enough time to look into it & will give feedback on it

Modifying FAN TABLE seems a difficult task for me.....because I heard it for the first time......
Is it an easy process or a difficult one?
Can you help me with that by providing step by step guide?

 

it's not chipset limitation?

 

Without software to do it for you or documentation (which is generally not available) it can be difficult. Each machine controlling the fan(s) in their own way. Usually these days it's EC controlled. You could try looking for some available software. Google "laptop fan control software" or something like that, maybe add your laptop model as well. Some that come to mind are speedfan and Hwinfo32 but I don't know if they support your laptop or not.