External USB Hard Drive Problems

slashem · 10 Oct 2009

I agree with Major Blud, my computer isn't a laptop either and I've tried powered USB-hubs. My problem is solely with Win 7 x64 as Vista 64 worked perfectly (except for the usual Vista flaws). I mailed Acer and they suggest total system recovery. They are as helpfull as usual

. I'm going to install a PCI USB-card later today.

Edit: Installed the generic $10 PCI-card a couple of hours ago. Just plugged it in and it worked. Apparently Win 7 had drivers for it. I've so far transferred 50+ Gb between all the drives, USB and SATA, in the system and no problems yet.

Major Blud · 02 Nov 2009

It looks like the problems are not strictly limited to Nvidia chipsets. According to this thread, it may be affecting the Intel P55 as well. Although this is related to the iPhone, the problems sound similar and I've experienced this as well.

Apple - Support - Discussions - iTunes 9 on Windows 7 x64 Has Problems ...

Jascias · 02 Nov 2009

slashem said:

Win 7 64-bit audio driver is up in Acer's driver section. I'm guessing it's the chipset driver we need.

I Second This:

1.New motherboard (ASUS P755D Deluxe) with Windows XP, all externals work fine.

2. Decided to install Windows 7. Externals no longer work.

3. InstallED updated Chipset driver for motherboard, ALL EXTERNALS ARE NOW RECOGNIZED.

4. Solution = Chipset.

Major Blud · 05 Nov 2009

I found another thread which is very detailed about the problem. It appears that Microsoft is aware of it, and may have a fix for us in the near future. It would appear that 64bit addressing is buggy on particular chipsets.

Windows 7 USB external hard drives lose its connection and stops working.

seekinsp · 07 Nov 2009

Major Blud said:

I found another thread which is very detailed about the problem. It appears that Microsoft is aware of it, and may have a fix for us in the near future. It would appear that 64bit addressing is buggy on particular chipsets.

Windows 7 USB external hard drives lose its connection and stops working.

Thanks so much for this info! I have been battling this problem for 2 weeks now and this gives me some hope. Has anybody tried any of the workarounds suggested in the other thread? Any reports of success/failure?

Major Blud · 16 Nov 2009

Looks like MS has posted a hotfix that addresses this:
http://support.microsoft.com/kb/976972

I have installed it and confirmed that it does indeed work.

polo62 · 06 Dec 2009

Also problems with usb (stops while transferring). the hotfix can't be installed in my machine. my machine doesn't correspond to the hotfix requirements. what can i do now?

macgyver2 · 07 Dec 2009

yes the hotfix does work.

You encounter problems when you move data over USB from a Windows 7 or Windows Server 2008 R2-based computer that has an NVIDIA USB EHCI chipset and at least 4GB of RAM

fixed my issue of transfering files from one USB to another USB HDD.

Polo62 why can't you use this hotfix?

polo62 · 07 Dec 2009

My computer seems not to meet the hotfix requirements. I don't know why. My configuration should be accepted. I’m searching for a solution since I install w7 and I don’t see anything coming.

macgyver2 · 07 Dec 2009

can you fill in your system specs a little more and maybe me or someone here can help.

the only Req. I can see if this is
windows 7
NVIDIA chipset and at least 4GB of RAM
if you have these it should work.

External USB Hard Drive Problems

FIXED

hotfix not for me