>Computer has suddenly started chugging lately
>Games start crashing at least once or twice a session, if they don't crash they hang
>Windows itself crashes, leaving me with no option but to hard reset
>Has to go through the whole "Diagnosing PC" shit each time this happens
>This is happening every other boot
Now one of my hard drives isn't booting. What the fuck is going on? Are my HDD dying? I've had my main one since 2010 and others since like 2013. What should I do mangs.

Upgraded the CPU and MOBO two months ago.
>Windows 10
>16 GB Ram
>GTX 1080
>i9700k non OC
>900gb HDD (OS)
>2TB HDD (Games and software)
>1TB HDD (Videos, recordings, misc shit)
The 1tb is the one no longer showing up.