Common problem with freeze PC

Time and again in different forums met questions about what PC people have freezes with sound, like rrrrr sound comes from the speakers and appears spontaneously, sitting in the browser, etc. In General, that long faced with this problem, the solution is not found and then didn't pay attention, but lately the freezes became more frequent in the first appeared when you load the game, metro 2033 Redux it is in the download. In the registry always gives two errors (critical) kernel-power (event ID 41) and then (WMI event ID 10)

Questions about heat, viruses and firewood are excluded. Iron is OK, checked through different tests
Спойлері7 3770
P8Z77-V LX
PECs 970
Two laths of the RAM at 4
Ocz 650w
SSD + hard