Two download suggestions:
1) For Fireface/Firewire users Microsoft released two hotfixes for the *non*-legacy Firewire port driver. The latest one says:
Quote:
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Transferred data is corrupted or the data transfer stops between an IEEE 1394 device and a computer that is running Windows 7 or Windows Server 2008 R2"
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Transferred data is corrupted or the data transfer stops between an IEEE 1394 device and a computer that is running Windows 7 or Windows Server 2008 R2
2) The following tool is a good substitude for Rivatuner. It allows to
switch NVidia Performance Modes without doing a reboot (including to turn on/off adaptive clock-rates to save power when you are not working on audio).
You need to run it "as Administrator" in order for it to detect and change the necessary registry keys. And you might need to have it "Create PowerMizer Settings" to first create those keys because on some setups they are not created by the NVidia driver setup.
PowerMizer Manager | Some More Bytes
PS: While the latest NVidia drivers mostly (but not necessarily completely) fix the huge DPC spikes that happen whenever clock-rates are switched they do not fix the 2D DPC issues on all hardware. My 9600M GT (bootcamped Macbook Pro) isn't fixed for example.