Hi,  I'm coming back with the usual combination of high DPC/sound stuttering in Windows 7 x64.  It happened to me before and I managed to pin it down to AVG issues before. Uninstalled it and everything ran smoothly until a few days ago. I know I did some updates with my antispyware software and also with the Microsoft Anti-Malware but doing rounds of disabling stuff I haven't managed to correct the problem so any help would be most welcome.  I've run xperf as I was told when I found the AVG issue and this is the file with the result: CPU  I have a Toshiba Satellite with these specs:  OS: Windows 7, x64 Processor: Intel i7-3610QM @ 2.30GHz RAM: 16GB Sound: Onboard Realtek Video: NVIDIA GeForce GT 630M  Cheers!