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pabloiv

M$1.00 Funded By Mahalo ? | May 08, 2009 05:57 PM

USB Root Hub problem in Win7 RC1

I just upgraded from Win 7 Beta2 to Win7 RC1 and all the USB ports stopped working. I looked into device manager and saw 4 USB Root Hub. all 4 reported an Code 19 error:

Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. (Code 19)

I uninstalled all USB controllers, unplugged all USB devices and rebooted.
Went into device manager and I got no yellow question marks in any of the devices. As soon as I tried plugign one in the question marks popped up.
I tried this with 3 different USB devices and the result was the same.

I did the whole process again with my mouse plugged in through it all, and while rebooting my USB mouse worked for a second as I was moving it absent-mindedlyduring boot-up and then just stopped. My brother is experiencing the same problem having upgraded from Vista, on his Compaq laptop (mine's a Gateway desktop).

I can usually fix these things myself but this one's got me stumped.

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Answers (2)

onek

June 13, 2009 10:49 AM

I think it has something to do with your USB drivers being for Windows Vista and not Windows 7. And only your computer maker can give you the right drivers, so check their official website. Other people are having the same problems with their USB devices under Win7: http://social.msdn.microsoft.com/Forums/en-US/windowsgeneraldevelopmentissues/thread/5dc9d240-af5f-4b86-a4fe-42b3644606cf

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stanar

June 13, 2009 03:00 PM

I installed Win7 RC1 32bit on a laptop and a desktop (both are dell) , no issues. On the desktop I clean installed the 64bit and it's really awesome.

Not sure what pc make/brand you referring to. You could check for that particular make.

And also I would try a clean install instead of upgrading.

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