File transfer freezes when copying to Lacie USB Drive

I just recently installed Windows 7 Home Premium on this PC: AMD Athlon64 X2 5600+ @2.9Ghz 4GB DDR667 Asus M2N-X motherboard (nforce 520 chipset) Radeon 3450 PCI-E 512MB 250GB Segate HDD Primary internal 250GB LaCie HDD USB 2.0 external (System in AHCI mode) Whenever I attempt to copy files to the LaCie external, the transfer freezes at some point (usually early on), Both cores are maxed to nearly 100% and I get an assload of Event ID 51 errors and another error for ntfs (can't remember ID). If I open the resource monitor, I see the cpu hog is "system interrupts - deferred procedure calls and interrupt service routines". CPU racing will continue until you shut down. Most of the time, I have to hard shutdown. This same hardware performs flawlessly on Vista 64-bit SP2 so its not a hardware malfunction. All drivers are OS supplied as Nvida didn't release Win7 versions for my chipset. So is this problem a compatibility issue with LaCie or is it affecting other external USB drives as well? I had to rollback to Vista since I have no way to backup my data till this is resolved.

I'm not sure about this, and its only a last ditch resort, and I dont know the setup with nforce boards, but i was thinking having AHCI enabled in the bios maybe the cause of the problem, but to change it to sata as IDE you need to reinstall the OS and truthfully I dont know whether this will fix the problem.

Are you running W7 and cant use the Lacie usb drive, or have you gone back to vista, and it doesnt work now, or do you want to return to w7 but cant because of the drive?

There should be more reply's so wait to see what others have to say.

Thanks for your reply :) I cannot use the drive in Win7 so I had to revert to Vista, where it works perfectly. I thought about re-installing with my BIOS set back to IDE, but I didn't think AHCI had anything to do with USB so I'm hesitant to go through all this again without something tangible. I really want to use 7, but can't until a solution is found.

No one?

I had a similar problem when transferring from one sata drive to another sata drive on the same controller both running in AHCI mode. I don't believe the AHCI was an issue but after I wiped the whole system and updated the chipset drivers everything was working fine. My guess is that you need an updated chipset driver. Did you try using vista x64 chipset drivers for you windows 7 installation? One thing I have learned with many years of Microsoft's BS drivers is that they are not dependable, always update every driver even if it is already found for most reliable performance, and if it is a new OS then update your drivers on a weekly basis for a month or two because the amount of bugs out there is ridiculous.

I didn't use Nvidia's IDE drivers in Vista and everything was fine. My gut tells me things will only get worse if I try and use drivers designed for Vista in Windows 7, especially when Nvidia's IDE drivers have been known to cause problems to begin with.

This is a problem that effects Windows 7 64 bit with more than 4GB of RAM using certain chipsets. Microsoft is working on getting a fix out ... should be soon. Here is a thread that discusses the issue in detail ... there is a temporary patch if you can't wait for the fix.


USB Problem x64 Windows 7

I found this out shortly after posting this topic. I appreciate the help though :)

Glad that you figured it out. I'm hoping that we see the hotfix shortly! I'm amazed that a problem of this magnitude does not get more visibility.

Whats really bad is that this problem was reported during the Beta and RC stages and they did nothing about it.