troubleshooting Question

HDD Dissappears after a while/slow transfer rate on Windows 7.

Avatar of marpanet
marpanet asked on
HardwareWindows 7Storage
8 Comments2 Solutions398 ViewsLast Modified:
I have a Windows 7 64bit with 500GB on the OS, then I added 2TB hard drive (Hitachi) to the system (for movies and stuff) and when it was full I added another 2TB hard drive (samgsung) for more movies and more stuff, recently I have been having this weird error.

Suddenly the hard drive dosen´t show on Windows/My Computer nor in Disk Management and I can´t access it, but if I reboot Windows it will appear once again, but when I want to transfer some information it starts at 100Mb/s but then falls to 1Mb/s, and after a while it won´t show up again.... I did a HD Tune test when it was available and the results where perfect, but then after 5 minutes the HDD dissapeared once again. I updated the BIOS and nothing happened, what can it be????.. can you help me?

Thank you,
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