So this started about a month or so ago as far as I can remember. I started getting completely random (either that or I don't see the pattern) shutdowns. At first I thought it might be my PSU's protections kicking in (I'm running the PC off the wall as I can't afford a UPS at the moment and we don't exactly have the most stable power grid), but now I'm not so sure.
Around the same time this started happening, I noticed my computer made a rattling noise on startup. I didn't think much of it at the time, thought it might be a fan hitting a cable or something, but now I'm starting to think it's the hard drive. I can hear it almost constantly, although once I get into Windows it stops being very loud and becomes a sort of high-frequency low-noise rattling. However when I'm starting up the PC it's VERY noticeable and it seems to increase and decrease (I think the increases and decreases are in line with spikes in HDD usage as Windows loads up files).
I've had the HDD for about 4 years now, and it's recently shown another problem as well, seemingly misreading how much space is actually taken up (one day it shows 40GB left, the next 120GB even though I didn't uninstall or delete anything). After one of the sudden shutdowns Windows' disk repair kicked in as well.
So I'm assuming this is almost certainly mechanical failure in the drive. I just wanted to see if anyone has any other idea for what it might be, however unlikely.
EDIT: These shutdowns are not very frequent, I've gone a week without one only to have it happen again. And it seems unrelated to system load as it's happened both while playing intensive games and while on the freakin' desktop.
Around the same time this started happening, I noticed my computer made a rattling noise on startup. I didn't think much of it at the time, thought it might be a fan hitting a cable or something, but now I'm starting to think it's the hard drive. I can hear it almost constantly, although once I get into Windows it stops being very loud and becomes a sort of high-frequency low-noise rattling. However when I'm starting up the PC it's VERY noticeable and it seems to increase and decrease (I think the increases and decreases are in line with spikes in HDD usage as Windows loads up files).
I've had the HDD for about 4 years now, and it's recently shown another problem as well, seemingly misreading how much space is actually taken up (one day it shows 40GB left, the next 120GB even though I didn't uninstall or delete anything). After one of the sudden shutdowns Windows' disk repair kicked in as well.
So I'm assuming this is almost certainly mechanical failure in the drive. I just wanted to see if anyone has any other idea for what it might be, however unlikely.
EDIT: These shutdowns are not very frequent, I've gone a week without one only to have it happen again. And it seems unrelated to system load as it's happened both while playing intensive games and while on the freakin' desktop.