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Cpu Running At 1/4 Speed


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15 replies to this topic

#1 donkeane

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Posted 23 March 2008 - 11:29 AM

Hi
I have a dell inspiron 630m laptop with an intel p4 cpu 1.7Ghz running at 367 Mhz. I have tried a new battery and ac power pack and formatting the hard drive and reinstalling windows with up to date drivers but this has not helped. Is the cpu finished? or is there some other possible cause?

In the bios sometimes it says the cpu speed is 1.7Ghz and sometimes 800Mhz.

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#2 dc3

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Posted 23 March 2008 - 11:40 AM

Down load and run CPU-Z and see what it shows.

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#3 donkeane

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Posted 23 March 2008 - 11:47 AM

Thanks for the quick reply
That shows the speed at 800Mhz about 1/2 of what it should be 1.7ghz

Edited by donkeane, 23 March 2008 - 11:47 AM.


#4 DaChew

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Posted 23 March 2008 - 12:01 PM

I am pretty sure there are functions designed into the cpu, bio and software drivers that clock down to save battery life and even when connected to ac power to control excessive heat build up

Start something intensive when connected to ac power and check then, it should be running full bore

playing an avi or a dvd should do it
Chewy

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#5 donkeane

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Posted 23 March 2008 - 12:05 PM

When the I load the cpu the pc hangs, sometimes it will come back after a couple of minutes more often than not I have to reboot.

#6 DaChew

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Posted 23 March 2008 - 12:29 PM

When the I load the cpu the pc hangs, sometimes it will come back after a couple of minutes more often than not I have to reboot.


that usually a sign of a sick computer, sort of like when you car won't start
Chewy

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#7 Sneakycyber

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Posted 23 March 2008 - 06:19 PM

Could be overheating, the computer may be throttling the cpu back becuase its getting to hot. Cleaning it out would be my first step.
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#8 donkeane

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Posted 25 March 2008 - 10:17 AM

This can happen when the laptop is cold, just turned on after being off for a few days, or might happen after being on a couple of hours, it seems to happen freeze/hang when the cpu usage increases.

#9 DaChew

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Posted 25 March 2008 - 10:43 AM

I think Sneaky hit the nail on the head, dust can cause it to overheat, dust/dirt on the fan can stop a cold bootup

http://support.dell.com/support/edocs/syst...en/sm/index.htm

http://support.dell.com/support/edocs/syst...k.htm#wp1129340

at least inspect the cooling assembly
Chewy

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#10 donkeane

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Posted 26 March 2008 - 11:29 AM

I have done that already and cant see any build up of dust and the fan seems to be operating fine.

#11 Sneakycyber

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Posted 26 March 2008 - 02:54 PM

Try changing your power settings in your Display properties menu (same place you choose your screen saver). Right click on your desk top select screen saver and at the bottom select power. Change your option to always on or always plugged in. See if that changes anything. Just a warning though if you change it your battery life will decrease.
Chad Mockensturm 
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#12 donkeane

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Posted 28 March 2008 - 04:43 AM

Is it possible that the laptop freezing and the cpu slow speed are unrelated or caused by an issue with some other component? Is there a program that can monitor the system voltages and power consumption? Could the problem be with the onboard power regulation? Because normally it seems that the slow cpu is a power issue, what hardware could cause the laptop to freeze?

I have already replaced the battery and the ac power adaptor.

#13 donkeane

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Posted 28 March 2008 - 04:45 AM

Thanks for all the replies, The laptop just froze again and I hit it a fairly aggressive bang and it came back to life, does this suggest anything to anyone? Maybe the Hard drive?

#14 Sneakycyber

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Posted 28 March 2008 - 02:52 PM

Although our frustration :thumbsup: sometimes gets the better of us an aggressive bang is not typically the best choice of action. I would attempt to find out the manufacture of the HDD And run a diagnostics test on it you can find links to the Different manufactures Here. The computer freezing and the CPU reporting incorrect speed could be related. The motherboard may be failing. Just in case I would start making back ups regularly if you don't already. You can use SIW to look up the information for your computer including HDD make and model.
Chad Mockensturm 
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#15 donkeane

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Posted 29 March 2008 - 01:35 PM

The SIW reports the system bus clock as being -1. I assume that this is incorrect, if so what problem would that indicate a prob with the cpu or system board?




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