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100% CPU Usage & 100% Disk Usage


Breems

New Member
Posts
12
#1
Hi all,

I'm having a bit of trouble with Windows 8 on my laptop (I've named my laptop Romulus for future reference in this thread). First off, let me give you a brief history on Romulus' journey thus far:

1.) Bought pre-built from ACER with Windows 8 64-bit installed.
2.) After playing around with it for a bit, I formatted the C drive (deleting all partitions) and installed Windows 7.
3.) Hoping to test out the new Windows 8.1, I reinstalled Windows 8 (a clean install from Microsoft this time... not the original bundled version from ACER). I have yet to install 8.1.

This is where I've noticed a few problems. Specifically, my CPU and Disk usage keep spiking to 100% for no apparent reason. Literally right after booting Romulus, before running any programs/apps, I see these spikes. I boot up, go straight to the desktop, fire up Task Manager, and watch sadly as the performance graphs tease me with those tall lines. The CPU spikes only last for a second or two and usage generally stays pretty low, but I'd still like to know why it's jumping like that. Disk usage spikes to 99-100% more frequently and stays there a bit longer. I've noticed perhaps very slight performance problems and some mouse lag, but I haven't been able to prove a correlation here.

Regarding drivers, these problems arose without any drivers installed (straight Windows 8 installation). Thinking the obvious, I installed all of Romulus' drivers listed on the ACER web page for this model, but the problems persisted. Although performance isn't really being hit, it's driving me absolutely nuts knowing these spikes are occuring. I've only had the PC for a few months now, so I believe the drive is in good shape (some diagnostic tools and chkdsk confirm good health). I'm also 99% sure no virus is involved.

I've seen threads like this all around (for disk usage, mostly), but rarely do I see the problem of spikes with both CPU AND disk usage. I'm fairly fresh into the Win8 install, so anything is an option. I've considered formatting the drive and reinstalling Win8; last time, I simply inserted the Win8 disk while running Win7 and it started the install from there, so could someone inform me of whether or not that method actually formats the drive?

EDIT: Thought I might add that I've monitored CPU & disk usage in Task Manager and during times of 100% usage, there are literally only a few processes/services running. They usually account for less than 1MB of disk usage.
 

My Computer

System One

  • OS
    Windows 8 64-bit
    Computer type
    Laptop
    System Manufacturer/Model Number
    ACER
    CPU
    i5
    Memory
    4GB DDR3 RAM
    Graphics Card(s)
    NVIDIA 730m
    Browser
    Firefox

exscentric

New Member
Member
Posts
201
#2
Couple of ideas till the brains show up with better ideas :) Find and shut off indexing and see if it stops. If not go to task manager and shut down running items one at a time and see what happens.
 

My Computer

System One

  • OS
    win 8

Hopachi

Polyhedric Stellation
VIP Member
Pro User
Orbiting the Moon

Posts
2,975
#3
Welcome tho the forums, Breems!

It seems you've just installed it so it's normal for the performance and indexing services to do that. The system tries to learn your program usage pattern beginning with activity from the superfetch service.

Look in Task manager and count all CPU usage up -> see what processes are those involved; do the same for disk.

Scan Romulus with Windows Defender or whatever antivirus program you prefer: if you're clean: leave it alone, give the system a few days and after a couple of more programs installs and restarts, things will settle down.

If you upgrade now to 8.1 there is no big deal, the system will continue the same routine.

If you enable .NET 3.5 in features or after .NET updates including the latest 4.5, some .Net optimization service will also use more CPU or disk than normal but it's just for a while.
 

My Computer

System One

  • OS
    Windows 10 x64
    Computer type
    Laptop
    System Manufacturer/Model Number
    HP Envy DV6 7250
    CPU
    Intel i7-3630QM
    Motherboard
    HP, Intel HM77 Express Chipset
    Memory
    16GB
    Graphics Card(s)
    Intel HD4000 + Nvidia Geforce 630M
    Sound Card
    IDT HD Audio
    Monitor(s) Displays
    15.6' built-in + Samsung S22D300 + 17.3' LG Phillips
    Screen Resolution
    multiple resolutions
    Hard Drives
    Samsung SSD 250GB + Hitachi HDD 750GB
    PSU
    120W adapter
    Case
    small
    Cooling
    laptop cooling pad
    Keyboard
    Backlit built-in + big one in USB
    Mouse
    SteelSeries Sensei
    Internet Speed
    slow and steady
    Browser
    Chromium, Pale Moon, Firefox Developer Edition
    Antivirus
    Windows Defender
    Other Info
    That's basically it.

Breems

New Member
Posts
12
#4
Welcome tho the forums, Breems!

It seems you've just installed it so it's normal for the performance and indexing services to do that. The system tries to learn your program usage pattern beginning with activity from the superfetch service.

Look in Task manager and count all CPU usage up -> see what processes are those involved; do the same for disk.

Scan Romulus with Windows Defender or whatever antivirus program you prefer: if you're clean: leave it alone, give the system a few days and after a couple of more programs installs and restarts, things will settle down.

If you upgrade now to 8.1 there is no big deal, the system will continue the same routine.

If you enable .NET 3.5 in features or after .NET updates including the latest 4.5, some .Net optimization service will also use more CPU or disk than normal but it's just for a while.
Thanks for the reply! I wasn't aware of performance/indexing features that ran automatically like that. That would certainly explain the usage, but I still find 100% spikes to be strange. I'm also still worried about the slight mouse lag occuring randomly, but I'll just hope that's a product of the indexing.
 

My Computer

System One

  • OS
    Windows 8 64-bit
    Computer type
    Laptop
    System Manufacturer/Model Number
    ACER
    CPU
    i5
    Memory
    4GB DDR3 RAM
    Graphics Card(s)
    NVIDIA 730m
    Browser
    Firefox