![]() ![]() Since I’m not very familiar with Windows internals, there are a lot of questions and problems using WinDbg. I don't know how to proceed in finding the problem and nobody has responded for some time, but I really need to find this problem so I'm going I'm going to try to use WinDbg to diagnose the BSOD errors myself on my new Windows 7 Professional system. So does anybody have any suggestions for how I can detect and report what device or driver is LOCK’ed while the system is still running before the BSOD? Jcgriff2 has said previously that “a PnP device is involved” and “This tells us that resource contention exists, i.e., a "LOCK" - a thread has exclusive hold of an object, another needs it but will never get it hence the BSODs” So the question in my mind is what IS the PnP device involved, and what thread is involved in the lock? Since I think I can predict when the BSOD is going to occur, is there some diagnostic procedure that can detect and report what device, driver, thread, or other part of the system is LOCKed BEFORE the BSOD actually occurs? If so, then I would think that would indicate directly what needs to be updated or changed. Only at Shutdown do we know something is wrong (or as mentioned above, when my flash drive is not recognized). The Users never call and complain that something doesn’t work. But the LOCK doesn’t seem to affect a very large part of the system. Our Users are not sophisticated computer people, so all of their tasks are relatively simple word/data processing and internet access, but it seems clear to me that someone is doing something to make the LOCK occur. So it’s seems likely to me that the users are doing something that causes the LOCK, but I don’t know what it is. Today was a busy day for the Windows 7 computer, with lots of activity both on the computer in question as well as the other two PC’s on our small network. All the symptoms of the BSOD were exactly the same as in the past. During this time, my flash drive was always recognized correctly except for the final time just a few minutes ago. So for the last week, I have been inserting my flash drive before shutdown in the evening and also randomly during the day. I had observed in the past that Windows 7 did not recognize my flash drive when I inserted it into a USB port if a BSOD was going to occur at Shutdown. We had another BSOD at Shutdown today but this time I knew it was coming. One is IPCONFIG, the other WMI/ NETSH, which will show you signal strength and network info. Two Notepads will open - one behind the other. If you wish to run WMI app alone outside of the BSOD collection app, download the zip, extract the EXE, save it to Documents, RIGHT-click on EXE, select "Run as Administrator". Doing so with a Netgear USB wifi stick and 3' USB cable here resulted in dramatic signal increase. Is the USB wifi setup simply a USB stick plugged in a port in the back of the system? You can use USB cable to relocate the USB wifi stick. At least we (I) now know there is no hardware issue surrounding it. I was wondering where it was based on specs and for some reason did not give consideration to the fact that the system could be ordered without it. Thank you for clarification re: Atheros wifi. Thanks again, and any further thoughts about the cause of the BSOD’s would be appreciated, as well as why the driver file date/times don’t change even when I supposedly update the drivers. I’ve never tried to figure out or use WMI. I’m not too surprised at the reduced speed although I don’t know how to measure typical performance over time. The USB adapter is located on the back of the PC and is about 20-30 feet from the router, through several thin walls of the trailer where the office is. Our usage is not very internet intensive so even at reduced speeds, so performance has been adequate. ![]() I have more recently been trying a new N router and the MediaLink USB adapter also links with it without any manual reconfiguration. ![]() ![]() I was surprised at how well it worked with absolutely no hassle upon installation. Along the way, I realized that we were running out of wired ports on our 4 port router and that the best-selling MediaLink USB adapter was only $30 at so I decided to try it. There is no good reason why our system does not have an internal wifi device except that we always had wired connections for desktop computers so that’s the way I ordered this one. HI, jcgriff2, and thanks for your response. Re: Windows 7 BSOD – DRIVER_POWER_STATE_FAILURE ![]()
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