Hello, about two months ago, I started getting various BSOD and almost every time they were different. And they occur almost every day, sometimes even 2-3 times a day (like today). I've tried many fixes and various solutions like memtest86, chkdsk, sfc /scannow, including reinstalling windows, but nothing seems to help. Almost at the same time (around the start of February) I've updated windows and my first BSOD happened. It could've have been a big coincidence as far as I know, because nobody experienced such viscous BSOD streak like I have. Around the time of January and February my (now 4.5 years) HDD Seagate barracuda 3tb (secondary drive) started to make a real nasty noise (like brushing rusty nail through metal) and it lasted about a week and suddenly stopped. I've used CrystalDiskInfo to check SMART and it showed current reallocated sector count 100 and worst 100 too. Buying new one isn't a big deal, but I would like to know if these problems with BSOD and HDD are connected. So my main question is, what could cause these BSOD and is it "necessary" to change HDD into a new one?