The title is self-explainable.
The last 10 days I've been having many BSODs around the first half hour I start up my PC. After frequent BSODs, the PC seems to operate normally, until I shut it down and boot it up to experience the same issues.
Using NirSoft's BlueScreenView, I can only say that the most frequent "bug check code" is 0x00000109.
Others are 0x000000d1, 0x00000050, 0x0000003b, 0x0000000a and 0x0000004e.
So far I have only followed the BSOD posting instructions.
Thanks in advance for your support!