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Thread: Process priority - iTunes and that "bzzzt"
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Old Aug 17, 2010 | 5:10 pm
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willyroo
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Join Date: Sep 2002
Location: BNE, Australia...not too far from the nearest Qantas Pub err Club
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Thank for the tips. I had another serious crack at it last night. A process called "system interrupts" keeps briefly appearing at the top of the CPU usage in the resource monitor. Hmm.


Downloaded and ran the DPC Latency Checker.

Red bars everywhere.

Updated all audio, USB, LAN and video drivers - a nice feature of Win 7. Disconnected 2 USB hubs (one of which is the Dell screen), disabled the 4 card readers on the front panel. Also moved the page file to the 2nd HDD and fixed it at 5373 Mb (recommended by Win 7).

Far fewer red bars, the "system interrupts" is rarely showing as a CPU hog, however the "bzzzt" and audio drop outs still keep happening, at a reduced frequency. Re-enabled devices one by one, and no real change to the system state.

I'm now almost certain the problem is the MS wireless keyboard and mouse. Will try a wired version of both tonight...and if that doesn't work it would appear (sigh) a fresh Win 7 format and installation required...
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