Show Posts
1
Living Room / PC WILL NOT BOOT TO WIN 7 PRO WITH USB PLUGGED IN
« on: March 20, 2016, 02:48 PM »
I have a device that is designed to resemble a HID. when it is plugged in via USB the PC will not boot. if i put it in after boot it functions correctly. in have used this same device on advantech pca-6010 SBC's with award bios. my current problem is with a pca-6028 SBC and american megatrends bios. justs keeps rebooting to "fix windows" or "start normally" screen. neither will boot.
i have looked into bios boot sequence. boot order is CD then HDD, there is no USB listed in boot order.
i have reinstalled win 7 pro and done all updates. i also installed all drivers that came with PCA-6028 SBC.
unplugging usb device at boot is not feasible. this is a production machine and operators that might shut it down / start it up can not be unplugging / plugging USB's.
i can get it to boot when device is not plugged in. just do not know what to alter so that the next boot with it plugged in is successful.
almost seems like the bios does its thing but then the very early stages of the win 7 pro boot up does not like something about this device.
I have contacted the USB mfgr & PC mrgr to no avail.
i am looking for recommendations for hw or sw that might be used to delay power to this usb port.
i also saw a 2005 thread ( https://www.donationcoder.com/forum/index.php?topic=28940.msg270246#msg270246 ) on using windows DEVCON with windows Scheduler to turn usb port off at logoff and on after boot, but i do not know anything specific about ho to do this or if it will really work.
what is the latest thinking on this?
i have looked into bios boot sequence. boot order is CD then HDD, there is no USB listed in boot order.
i have reinstalled win 7 pro and done all updates. i also installed all drivers that came with PCA-6028 SBC.
unplugging usb device at boot is not feasible. this is a production machine and operators that might shut it down / start it up can not be unplugging / plugging USB's.
i can get it to boot when device is not plugged in. just do not know what to alter so that the next boot with it plugged in is successful.
almost seems like the bios does its thing but then the very early stages of the win 7 pro boot up does not like something about this device.
I have contacted the USB mfgr & PC mrgr to no avail.
i am looking for recommendations for hw or sw that might be used to delay power to this usb port.
i also saw a 2005 thread ( https://www.donationcoder.com/forum/index.php?topic=28940.msg270246#msg270246 ) on using windows DEVCON with windows Scheduler to turn usb port off at logoff and on after boot, but i do not know anything specific about ho to do this or if it will really work.
what is the latest thinking on this?