Windows 8.1 Disk Usage 50%-99%, Have Tried Everything

By d0lphin
Feb 15, 2016
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  1. So this started after Windows Update installed updates two days ago. When I open a program, either that process or the Antimalware Service Executable process skyrocket in disk usage, grinding everything to a halt. I've disabled the BITS, Superfetch, Windows Defender, and Windows Search services. As I'm typing this, Microsoft Compatibility Telemetry began randomly using 49% of my disk at 26.0 MB/s. Not sure why.

    My C: drive's average response time right now is anywhere between 450 ms and 4000 ms, the highest disk activity is coming from CompatTelRunner.exe at ~13,000,000 B/sec in the Resource Monitor. I opened Origin just to test and the Origin process immediately started using 50% of my disk, and took ~1 minute to open (compared to the instant opening I'm used to). I've run chkdsk and a few other hard drive health programs, the hard drive seems healthy enough. I've been looking for an answer for the past two days.

    Any ideas where I should go from here?
  2. Cycloid Torus

    Cycloid Torus Stone age computing. Posts: 3,021   +661

    If it were me I would do a pre-update restore...and go on from there, possibly limiting which updates I would allow.
  3. d0lphin

    d0lphin TS Rookie Topic Starter

    No restore points set - probably something I should have enabled. I've downloaded ProcessExplorer, nothing's standing out to me so far.

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