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rashad14
1 Copper

Spikes in CPU

Hi everybody. This is my first post, generally I suffice with reading the forums and using the info I find to fix my problem. But this time is different. I tried many suggested solutions.

Basically, I bought a laptop 4 weeks ago- Dell Inspiron 15 5000 Series with i5 processor. Within couple of days I started noticing sudden spikes in cpu usage. Considering that the laptop had been with me only for couple of days and no dodgy websites opened, or programs downloaded, I dont believe this could be a virus issue. I even re-installed windows again (btw it is windows 10). but problem continued.

Then I figured out that this spike is driven by 'System' (NT Kernel and System). Furthermore, process explorer shows that it is specifically driven by ntoskrnl.exe!RtlSidHashInitialize+0x1450  (see photo) 

I am not an IT guy, but I did my best trying to do what solutions were offered online, including disabling .NET frameworks, updating some of the drivers (network adapter driver for example), run Dism /Online /Cleanup-Image /RestoreHealth  etc. but nothing seems to be working.

Few more observations that may help you  with solution: 

- Spikes in CPU results in lagging cursor/typing, or some weird noise while playing videos.

- I feel like this happens when I open few things at the same time (by this I mean few tabs in chrome and couple of apps, such as word/excel- nothing major). .

- After restarting the issue goes away for a while and then comes back.

- Seems like there is a cyclicality- check the photo please. there is a set interval almost.

Please let me know what can I do? 

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5 Replies
Moderator
Moderator

RE: Spikes in CPU

Thank you for your message.


Did this start after any Windows update or software changes like anti-virus or game installation?


Does the CPU usage remain constantly above 90%?


Try to disable audio service & check if the issue persists.


Run a hardware diagnostic by following this link http://bit.ly/2fJuGXB  & check if there is any error listed.


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Saltgrass
4 Ruthenium

RE: Spikes in CPU

Just an observation, but many folks posting with problems seem to use Chrome.

Win 10 and related utilities do, at times, use quite a bit of system resources.  The difference is, they will usually calm after a while.  The best thing to do is to check what is using the Resource Monitor.  If the the usage is processor then check the speed along with the percent of usage.

If Drive usage is involved, use that tab and filter for the highest usage and check the box so you can see what is happening.

I do not see the photo to which you refer, but perhaps you are using Process Explorer to check.  I have found some web pages, which do not contain sound or video which can run the processor usage up to 50-60% just by being on the page.

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XPS 2720, Inspiron 17 7779, Inspiron 15 7567, XPS 13 9365, Inspiron 1545, TB16 Dock

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rashad14
1 Copper

RE: Spikes in CPU

Hi mate,

thanks for your reply. This problem started on the day I started my brand new laptop. now, it could be due to system update (normal process when you buy a new laptop). Since then I have re-installed my windows and problem still exists.

the cpu does not stay above 90 at all. it only has spikes which make it be around 20-30% but this is enough to freeze the computer for a sec.

and this seems to happen cyclically. in below response to the other post, I will repost the screenshots.

I will run the hardware diagnostics you suggested soon.

Thanks

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rashad14
1 Copper

RE: Spikes in CPU

sorry about no photo. I forgot to attach!

please see below. 

so, do you suggest using IE or Edge would be a solution?

Because I am using Chrome and seems like this problem does not calm down.

please see the photos and let me know if you have a further advice.

Thanks!

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Saltgrass
4 Ruthenium

RE: Spikes in CPU

I am not a programmer, but it looks like the line using processor is working on the Security ID Hash Initializer.  If this only happens in Chrome, maybe an update or the site you are on.  I do not use Chrome so I can't say.

The Processor on a laptop will normally run fairly slow, around .75 GHz.  It might be the added load happens when the processor can adjust and causes the delay, but I can only guess.  I know how irritating the pauses can be.

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XPS 2720, Inspiron 17 7779, Inspiron 15 7567, XPS 13 9365, Inspiron 1545, TB16 Dock