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Laptop Shuts Off Randomly

by Aces / March 25, 2005 11:57 PM PST

Hi I have a problem with my laptop and was wondering if anyone could help me.

The problem with my laptop is that it shuts down randomly. It goes dead suddenly- without warning.

-it turns off at different intervals (once after 30 min of use, once after 55 min)
-once turned off before windows could start loading during startup(bios loading stage)
-checked processor temp (was at 62 degrees before it turned off)
-went into bios, changed processor speed to low- still turned off later
-turns off when on ac power only, and when on battery power.
-fan works when laptop is turned on, and seems to work fine while laptop is in a windows session.

I have strong suspicions that this might be a hardware issue. Any comments will be appreciated.

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Same reply to ..
by R. Proffitt Forum moderator / March 26, 2005 12:06 AM PST
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My System Specs
by Aces / March 26, 2005 12:19 AM PST
In reply to: Same reply to ..

My laptop is an IBM Thinkpad T21 2647-4AU.
OS: Windows XP Professional
RAM: 128 MB
No known spyware or virus issues
One PCMCIA Card D-link DWL-650 in PCMCIA slot
The laptop was manufactured in 2000
Basal CPU usage is at ~10%
Windows XP was clean installed over OEM supplied Windows 98SE

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And have you done the cleanup as suggested?
by R. Proffitt Forum moderator / March 26, 2005 12:24 AM PST
In reply to: My System Specs

The unit is old enough to have heatsink issues, but that model isn't one on the common problems list.

Bob

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Pressure Dusted Under Heatsink
by Aces / March 26, 2005 8:45 AM PST

I blow dusted the fan, including the area under it, right above the CPU. The computer hasnt shut off so far, so the problem may have been dust accumulation, although I havent run any CPU intensive tasks like defrag yet. Operating temp of the CPU is now at 60C. If it needs to be lower, I may have to remove the keyboard, heatsink, and blowdust accordingly. Does anyone know what the ideal operating temp for a PIII 800MHz Mobile CPU might be?

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Still shutting down unexpectedly
by Aces / November 29, 2005 1:28 AM PST

So after applying some arctic silver 5 (thin layer) to the processor and reinstalling the heat sink, the system worked fine for a while, until overheating again. I installed a new heatsink and reapplied the thermal paste, but the system is still overheating and shutting down. I made sure (several times) that the heat sink was properly adjusted; the system still overheats. I ran speedfan, which showed processor temp to be in the 30-50 C range when shutting down. Do I need to get a new processor, or could it be a problem with the system board?

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Try a cooling pad?
by R. Proffitt Forum moderator / November 29, 2005 1:34 AM PST

As the laptop ages, the fans slow.

Bob

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