Question about HP Compaq nc6220 Notebook

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USB applications unable to access Driver

I have a Compaq nc6220 that is not accessing the Cypress, Microchip, STmicro or any other non-standard USB device driver when I use an application.

Unlike older HP laptop models (with the fingerprint scanner) disabling the embedded security and vendor keys has not solved the problem, nor has *not* installing these drivers in the first place.

The Cypress EZ USB Control Panel is able to see USB devices (Hitronic Trainer, devices that I've built and Cypress' Kit) but is unable to program these chips, retrieve a string and will hang on a vendor request. None of the demonstration applications or the newer Cypress Suite will even find an attached Cypress USB device. This is with all possible sixteen logical combinations of driver set, driver definition, EzMr version and external (retail) device.

The typically worthless STRIFD001V1 and SETIFD001V2 both have the same problem; Device manager can see the device and load its driver, but applications cannot, and hang on vendor requests.

The Microchip PICKIT2 I borrowed from a friend (whose older HP laptop I 'fixed' by disabling these features) was also unable to connect to applications but are plainly visible in the device manager.

There also seems to be a curious behaviour in which some requests are redirected to my Logitech mouse, or my embedded Wi-Fi card.
And the Cypress chips are being enumerated as USB hosts for some unknown reason.

The OS I am using is Windows XP Professional SP3 purchased and downloaded directly from Microsoft's (reccomended) retailer Digital River.
The only two HW differences from my laptop to a stock one is a Hitatchi HD to replace the failed Fuji disc, and many of the rubber feet have broken off.

USB devices:
Hitronic Trainer -,
I've built -
Cypress's Dev Kit -
STmicro doesn't deserve a link.

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  • Darren Jul 03, 2010

    Clarification: I have reinstalled windows. It did not help.

  • Darren Jul 05, 2010

    Windows Update is not my friend.

    Discovered that a ten year old generic driver or a completely useless dummy driver was being loaded instead of the drivers I was manually selecting and instructing directing windows to install. The windows should have been telling me 'compatible driver not reconised' instead of lying to me outright and doing this {deleted} instead.

    Hacked the INF files to force windows to install AND actually load the drivers I am manually installing instead of that {deleted}. I am now able to program my Cypress chips and a similar hack should allow me to use the PICKIT too.

    Windows trying to stop me from using the ST is actually a mercy, however an overt 'warning this vendor should not be trusted' would have been better.

    Interesting discovery during this; Apparetly Logitech uses Cypress chips in their HID devices, and the CyConsole can reprogram them...

  • Darren Aug 07, 2010

    The problem was that windows was lying to me and automaticaly loading a dummy driver from its database instead of the real one every time I manually selected the driver location. If I find out what vendor included a blanket dummy driver that affets so many different brands I will personally track down the programmer responsible and smack them across the face with their keyboard.



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Reinstall ur o.s. and everything. (Backup ur files 1st)

Posted on Jul 03, 2010


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