Can a bad PSU cause bad sectors on a hard drive?

robv410

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Nov 24, 2014
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Hi everyone!

This may be a fairly long story, but I'll try to shorten it where I can. Last month, I started my computer and chkdsk started. It found some bad sectors on my hard drive. It claimed to have repaired them and the computer continued to work. The next time I started my system, chkdsk ran again (sorry, I don't remember the exact circumstances in what caused chkdsk to run), this time it found several more errors and it tried to move files to new sectors on the drive. This drive is 4-5 years old, so I figured that the drive was probably failing. I bought a new drive and installed it in the system. I installed Windows 7 and, long story short, within a couple days, I was receiving bad sector errors. This led me to believe that the motherboard may be failing.

I've been meaning to do an upgrade anyway, so I bit the bullet and ordered a new motherboard, cpu, and ram. The only components that are the same are the case, video card, dvd drive, and PSU. In the meantime, I took a system home from work. I installed my new hard drive in that system, reinstalled windows and everything worked beautifully.

When the new motherboard, cpu, and ram came in, I installed them in my case using the same video card, dvd drive, and PSU. I installed Windows and it worked for a couple days. It didn't run all that well, but it ran. The computer would just randomly hang every so often. Then I started getting bad sector errors during chkdsk. I ended up reformatting and installing windows several times and I would end up with bad sector errors. I ran the manufacturer's (Seagate) diagnostic tool on the new drive and it passed. I decided to take the drive back to the store and swap it for a new drive anyway thinking that I may have just received a lemon of a drive.

I brought the new drive home and installed it in my case. Installed Windows and upon the first reboot after the first small windows update, chkdsk ran and found bad sectors. I ran Seagate's diagnostic tool on the new drive and it got about 95% finished then failed the drive saying something about the test being unable to finish because the drive didn't have power (I don't recall the exact wording on the error message). I hooked up the drive to a different computer and ran the diagnostic again and the drive passed with no issue. I was thinking that maybe the SATA controller was bad on the new motherboard, so I asked for an RMA this morning.

What really bothers me is that I'm having the same issues with new components that I had with the old ones. Now that I'm thinking about it, the only component that is the same from the old setup to now that might cause some problems is the PSU. Which leads to my question, can a bad PSU cause bad sectors on a hard drive?

My specs for those interested:
Gigabyte GA-970A-DS3P motherboard
AMD FX-8320 cpu
HyperX Fury Red Series 8GB DDR3 ram
GTS-250 video card
Seagate 1TB 7200rpm hard drive
600W PSU (I don't recall the brand right now, sorry)

I'm going to try a new PSU when I get home, but if anyone may have some other ideas, I'd love to hear them.

Thanks
 

robv410

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Nov 24, 2014
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I'm going to try with a known good power supply tonight. I just thought about something else that made me a little worried... When windows ran the last chkdsk, it went through and reallocated pretty much every file to a new location. I'm planning on reformatting the drive and reinstalling Windows. Will the reformat reset the allocation tables that Windows has? I guess my question is this: When chkdsk reallocates files, is it doing it because of physical bad sectors on the drive or logical bad sectors?

Seatools scanned the drive and said that it passed the long diagnostic test. I'm going on the assumption that the drive is physically fine and that Windows is reallocating logical bad sectors.

Does that sound right?
 

robv410

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Nov 24, 2014
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Thanks for the info Bootcher.

I put a different power supply in the computer and it's been running fine for the last couple days. There haven't been any slowdowns or chkdsk problems. I've never seen a bad power supply affect a hard drive like that.