Laptop Overheating - Problem with Dell 600m

QUOTE(Lancer @ Dec 14 2008, 01:03 AM)

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Hi

   My Hp laptop is getting too hot after I recently changed a broken lcd display. The display that I have now is just a compatible one.. A chinese one I guess.. Not sure if the specs of the lcd display are the same as the original one that came with the laptop.

 After changing the laptop lcd, its getting too hot. I have sensors-applet installed on ubuntu and the temperature sometimes shoots to 70 degrees celcius and more. I am noticing very frequent freezes/hangs on ubuntu. Not sure if its related to the heat.

Also, after the lcd display change, the battery dies down very fast. So I need to have the laptop on charge all the time.

 If you could give me any suggestions on how I could reduce the heat, that would be really helpful.

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 Laptop Display freezes and flashes after extended use
I have a Toshiba Qosmio F25 with Windows XP MCE 2005 SP3, Pentium M 750, 2 GB PC4200 Ram, and an nVidia GeForce 6600 GO graphics card. I've had the latpop

for a little over 4 years, now.

I am having a display problem that I believe is hardware issue. Each day, I can use the laptop for about an hour or two with no problems, then all of the

sudden the screen will freeze and/or flash on and off(although the backlight does stay on). Once that happens, all I can do is a force shutdown by holding

down the power button and when I restart it, it will only last a few minutes before it does it again. When it freezes, the processor usage goes up to 100%

and I can even see the mouse pointer moving in between the flashes and freezes. When it gets really bad, there are even problems in the display of the BIOS

settings. The screen doesn't flash or freeze, but it mixes up the characters in some words. The problems will even happen when connected to an external

display via RGB connection also. One thing I notice, is that if I tilt back the laptop when it starts acting up, it "seems" to not be as bad and I will be

able to use it for a little while longer.  Also, it doesn't happen as fast on battery power as opposed to A/C.

Occassionally, I will get the blue screen of death after freezing or flashing. The only thing I see in the Event Viewer that is related is an EVENT ID 1001,

SOURCE Save Dump, that says that the computer has rebooted from a bug check. That one only shows up after a BSOD. Another event that occaissionally appears

in the event log when the laptop freezes, is i8042prt stating that the ring buffer that stores incoming mouse data has overflowed. I assummed that is a

result of me moving the mouse around while the display is frozen, but I could be wrong.

Here are the things I have done already:
1. Updated, rolled back, installed original drivers
2. Stopped nVidia service and prevent other nVidia process like nwiz from starting at boot up
3. Took the laptop apart and vacuumed out all the dust - it was pretty bad
4. Disconnected the graphics chip and plugged it back into the motherboard, leaving the heatsink attached
5.  switched out the new RAM I installed last year with the 2 original 512mb modules that came with the laptop

Nothing worked. Also, the most obvious thing that I thought it would be is a heat issue but the fan definitely works fine, and I have programs that monitor

the 5(cpu, gpu, hdd, motherboard, remote) temp sensors in this laptop, and none of them are getting hotter than usual. As a matter of fact, I have seen the

GPU run perfectly fine up to a temp of 100 degrees celsius, then the fan will kick on and bring the temp down to 80 degrees and then fail. I know those temps

are high, but those are consistant with how the temps have been since the laptop was new.
One more thing of note. I don't think this is related, but about 6 months ago, the ccfl bulb in the display went and the guy who I paid to install a new one,

kept having a hard time and was breaking the bulbs, so he ended up replacing the whole display. The laptop then worked fine up until about 2 weeks ago, when

I woke up to a blank screen on the laptop after falling asleep with it on because I watch cable TV through it with the internal TV tuner and MCE 2005.

I am sorry for the long post, but if there is anybody that could give me some advice on what they think might be the issue, would be greatly appreciated. If

you need more info, let me know. Thanks.

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