Hi, this is my first post, hope you guys can help.

My main drive is a 128GB SSD, my 2nd is a sata 2tb which only holds video. In the past few days I have had issues watching videos from this folder, even watching via Plex wasn't working, constant buffering. I tried to copy files from the drive onto the SSD and also onto a third external drive and both started off with high transfer rates of around 100MB/s, but then instantly dropped to under 5mb/s and eventually slows to a halt.

I have downloaded HD tune, the error scan shows 1 red dot. Minimum 0.1mb/s, max 216mb/s, avg 110mb/s

I have also plugged the disk into a different sata port on the mother board to no avail.

Windows 7
i7 3.50 GHz
16GB memory

try to check drives in other computer first. May be it's not drives but system problem.

It is a seagate DM drive, starting to fail. If the files are important, better start to back them up to another hard disk ( and not a seagate one )

copy your files from this bad drive ..

Sorry i never replied, I didn't think there were any replies here. I contacted the company that supplied the PC, they helped me send them some logs and screns of what was going on. Yes the drive is done, I've copied out everything that was on it, after which is strangely got faster. But i'll be buying a new drive this week. Thanks

It sounds like bad sectors were reallocated to spares. Check the SMART data with a tool such as CrystalDiskInfo.

Just out of interest, try repeating HD Tune, but with a 1GB shortstroke. You may be able to see a bad head.

How to determine number of heads using HD Tune:
http://www.hddoracle.com/viewtopic.php?f=59&t=650

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