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pcw.sys BSOD when plugging in a hub (intel usb 3.0)

intel usb 3.0 pcw.sys usb boot

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#1 zeropc

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Posted 09 July 2013 - 01:51 AM

Hello all,


  I recently got windows 7 pro to boot off my USB drive and installed all my drivers for my laptop (including intel usb 3.0 drivers (link: https://downloadcent...x?DwnldID=21129) and everything works great - EXCEPT when I plug in a hub into one of the ports.  Within 2-3 seconds of plugging the hub in, I'm greeted with a BSOD saying that pcw.sys is to blame.  Digging deeper, I discovered that my registry keys gets reset back to their default values:


My values:


start = 0

group = boot bus extender


Default value:


start = 3

group = bus


I then have to take my usb drive to another machine, load the hive and restore my these 2 reg keys, then I'm back up and running.


The work around is to uninstall the intel usb 3.0 drivers and let windows use it's built in 2.0 native support.  I'd really like to keep/fix the usb 3.0 speed.   Any thoughts??


Thanks ahead of time.

#2 BobxT



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Posted 09 July 2013 - 06:28 AM

Hi zeropc,

Have a look at this topic:-
BSOD in pcw.sys - stop error 7e
Started by BobxT, Sep 30 2012 11:37 AM

Located here:-

Perhaps it may help.


#3 zeropc

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Posted 10 July 2013 - 11:45 PM

Yea, after reading with no specifics mentioned. I'm still at the same point. Any other thoughts?? Thanks

Also tagged with one or more of these keywords: intel usb 3.0, pcw.sys, usb boot

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