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Computer wont recognize the NXT 
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Joined: Mon Oct 10, 2011 4:46 pm
Posts: 15
Post Computer wont recognize the NXT
I have RobotC for Mindstorms my computer is Win7 64bit
whenever I plug in the NXT it says USB Device not recognized
ANd then i go to RobotC and it says
Code:
Deferred close connections to NXT brick
Searching for NXT bricks in 'boot' mode

And nothing the NXT is on I have downloaded a multitude of drivers and nothing
Can anyone help?

Also in the Device manager the Device status is,
Code:
Windows has stopped this device because it has reported problems. (Code 43)


Mon Oct 10, 2011 4:55 pm
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Post Re: Computer wont recognize the NXT
Problem code 43 (0x2B) is: "Windows has stopped this device because it has reported problems. (Code 43)"

It means the NXT driver has reported a failure. If a driver is well written, it should log an event entry in the system event log detailing the failure. You can access the system event log by:
- click start
- right click "Computer", select "Manage".
- On the left pane, expand "Event Viewer -> Windows Logs -> System"
- Scroll down the list and look for a red "!" Error with the Source being the NXT driver.
- If you just reproduced the failure, you don't need to scroll down far.

Disclaimer: I have no idea if the NXT driver will write anything to the system event log. But if it does, that's where you look for it.


Mon Oct 10, 2011 5:33 pm
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Post Re: Computer wont recognize the NXT
BTW, make sure you have the latest NXT driver installed. It doesn't hurt to re-install it just to make sure. Also, read this thread about NXT driver crashing.
viewtopic.php?f=52&t=3469

I am not saying you have hit this problem but if you re-install the NXT driver, you need to be careful how to install it "properly".


Mon Oct 10, 2011 5:36 pm
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Post Re: Computer wont recognize the NXT
Just did both those things to no avail


Mon Oct 10, 2011 5:59 pm
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Post Re: Computer wont recognize the NXT
I assume you still have the problem code 43? If so, did you check the system event log?


Mon Oct 10, 2011 6:04 pm
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Post Re: Computer wont recognize the NXT
i did and nothing


Mon Oct 10, 2011 6:10 pm
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Post Re: Computer wont recognize the NXT
Are the batteries in your NXT fully charged? Also try it with another cable.

- Xander

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Tue Oct 11, 2011 1:41 am
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Posts: 613
Post Re: Computer wont recognize the NXT
This could be a number of things... out of date USB drivers (are you using the 1.20 ones from our website?), incorrect permissions (is this a school computer that may be locked down/not an administrator), another application preventing the USB from being recognized, a bad USB cable (like Xander mentioned).

The fact that windows is reporting "Windows has stopped this device because it has reported problems." alarms me that you may need to contact LEGO regarding this one.

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Tue Oct 11, 2011 9:20 am
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Post Re: Computer wont recognize the NXT
I have seen a bad USB hub can do that do in case you are connecting through a USB hub.


Tue Oct 11, 2011 1:40 pm
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Post Re: Computer wont recognize the NXT
took care of it the hardware usb drivers were automatically rolled back by our school districts lock down software got the admin to simply remove the software and vol-la it worked


Tue Oct 11, 2011 2:48 pm
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