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Win7 Intermittent Freezes - Wireless related?


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#1 langr

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Posted 22 July 2013 - 11:30 AM

Windows 7 Professional x64 on HP Probook 4720s with 4 GB memory - freezes intermittently, but only appears to do so when connected to wireless network (hard-wired network with wireless turned off - no problems). Also seems to be OK in safe mode with networking (at least it hasn't frozen yet). Here's what I've tried so far:

  • complete scans with MBAM and Spybot - clean
  • remove and re-install wireless connection through device manager (Ralink RT3090)
  • download and install current driver from HP's site
  • reset TCP/IP settings

No luck  so  far in  isolating culprit. Advice appreciated.



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#2 SpywareDoc

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Posted 22 July 2013 - 04:08 PM

May be some kind of interference. Many types of devices can cause wireless interference including Bluetooth devices, cordless phones, fluorescent lights, microwave ovens, outdoor microwave links, WiMAX, wireless game controllers, wireless video cameras, Zigbee devices, and so on. Even bad electrical connections can cause broad RF spectrum emissions.



#3 langr

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Posted 22 July 2013 - 04:22 PM

May be some kind of interference. Many types of devices can cause wireless interference including Bluetooth devices, cordless phones, fluorescent lights, microwave ovens, outdoor microwave links, WiMAX, wireless game controllers, wireless video cameras, Zigbee devices, and so on. Even bad electrical connections can cause broad RF spectrum emissions.

Appreciate the suggestion, but don't think it's interference. Unit exhibits the same behavior (freezes) in two entirely different environments (office and home) and two different wireless networks (and, again, only when connected via wireless - oh, and, so far, wireless in safe mode appears to be stable--6+ hours now in that state with no freezes).



#4 SpywareDoc

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Posted 23 July 2013 - 06:21 AM

So it sounds like the problem is something that's loading in normal mode. Run MSCONFIG, disable all but say the top three on the Startup tab, reboot and test. If it's stable, enable the next three, reboot and test. If not, disable two of the first three, reboot and test. You get the idea.



#5 langr

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Posted 23 July 2013 - 07:41 AM

So it sounds like the problem is something that's loading in normal mode. Run MSCONFIG, disable all but say the top three on the Startup tab, reboot and test. If it's stable, enable the next three, reboot and test. If not, disable two of the first three, reboot and test. You get the idea.

Good suggestion - should have thought of that (actually, was sort of hoping someone might have some obvious candidates). Will post back what I find (assuming...). OBTW - complication with this approach is it often takes an hour or two for the symptom (freeze) to occur - cannot spontaneously generate the freeze; it just happens.


Edited by langr, 23 July 2013 - 12:41 PM.





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