Check the system is suitable for processing real time audio.
High ISR (Interrupted Service Routines) and DPC (Deferred Procedure Calls) latencies prevent your CPU from processing real-time digital audio efficiently (or at all, sometimes). LatencyMon from Resplendence is a free utility that checks your computer's ability to handle digital audio by measuring ISR and DPC execution times as well as hard page faults. It identifies the kernel modules and processes causing high latencies that lead to audio drop outs. LatencyMon also serves well as a simple ISR, DPC, or hard page fault monitor.