Tech Help Needed!

Note: This is nothing to do with Rationalist Judaism.

I am having a technical problem with my computer and I was wondering if there are any computer gurus who read this blog and can help!

I am trying to upgrade from Windows Vista x64 Home Premium to Windows 7 x64 Home Premium. Compatibility is fine, everything goes fine until the last stage, when it gets to 62% in putting in the new files etc. Then it reboots, says that it's starting services, then says that the installation failed and it's rolling back to Vista. This is NOT the notorious "continuous reboot cycle" that's all over the net. Nor is it the problem that Microsoft describes here. Instead, looking at the error log (reproduced below), it seems to be a problem with a bluetooth driver - it says "BthMig: Failed to migrate bthport keys, bailing out." But my computer has no bluetooth hardware or software that I know of. I found this exact problem discussed here, but with no solution proposed. If anyone can help, I would be most grateful!

2009-12-03 18:20:35, Error Number of Enumerated Devices = 11[gle=0x00000103]
2009-12-03 18:20:35, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:35, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:35, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:35, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:35, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:35, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:35, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:20:35, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:20:35, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:35, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:20:35, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:20:38, Error Number of Enumerated Devices = 11[gle=0x00000103]
2009-12-03 18:20:38, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:38, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:38, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:38, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:38, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:38, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:38, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:20:38, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:20:38, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:20:38, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:20:38, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:21:10, Error Number of Enumerated Devices = 11[gle=0x00000103]
2009-12-03 18:21:10, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:10, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:10, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:10, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:10, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:10, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:10, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:21:10, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:21:10, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:10, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:21:10, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:21:13, Error Number of Enumerated Devices = 11[gle=0x00000103]
2009-12-03 18:21:13, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:13, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:13, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:13, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:13, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:13, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:13, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:21:13, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:21:13, Error Failed to find driver file path. Error=00000002x[gle=0x80092004]
2009-12-03 18:21:13, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:21:13, Error Failed to find driver file path. Error=ffffffffx[gle=0x00000003]
2009-12-03 18:37:16, Error [0x0808fe] MIG Plugin {e0cbf06c-cd8b-4647-bb8a-263b43f0f974}: BthMig: Failed to migrate bthport keys, bailing out