Large external HDs not recognized by Windows 7 64-bit

Hi,
I'm trying to see if someone else out there has had this same problem have has been able to solve it.
I have an HP Pavilion DV6 - NQ615AV Entertainment Center PC. I'm running Windows 7 Professional 64-bit SP1.
I have several external USB hard drives (80GB, 320GB, 500GB) and several USB memory keys (2GB, 14GB) that work well with this computer.
I recently got a couple of 1TB and 2TB external USB hard drives, and they are not being recognized by this computer. The hard drives work well with other systems (Windows 7 32-bit and 64-bit, Windows XP), so they are ok. The drives also work on my computer if I boot from an Ubuntu memory key.
The behavior I see is that Windows gives the usual "Installing device driver sofware". As it does that, it correctly identifies the drive as, for instance, "My Book 1140". After a while it comes back with "Device driver software was not successfully installed". When I check the Device Manager, the USB hard drive is listed under "Other Devices" with the same name (e.g., My Book 1140), but there is no entry under USB Mass Storage Device or Disk Drives.
I have tried many tips from other websites, from deleting temporary files under C:\Windows\System32\DriverStore to power cycling the hard drives (they all have external power supplies), to "unhide" empty drives from Windows Explorer. The drives do not show under Disk Management, so I cannot attempt to assign a different letter or initialize them. Again, they work fine on other systems, they are properly formatted, and they can be read/written to (on other systems).
The one difference I noticed between a working and a non-working situation is that, on other systems, when the external hard drives properly show under Disk Drives in the Device Manager, the Driver Details tab shows two drives loaded: disk.sys and partmgr.sys. But when I look at the same tab in my non-working system, it show the drives that are recognized (the older, smaller external drives, and the internal SATA drive) have an extra driver: hpdskflt.sys
Has anyone else been able to use newer, larger USB external hard drives with this model? Is there a limitation in the hardware that would make those newer drives not compatible? As my smaller hard drives and memory keys still work under Windows 7, there's no issue with the USB ports themselves, just with these specific newer, larger hard drives.
I've sent an email to HP support, but I'm not hopeful because they only provide tech support to devices under warranty, or under a busines service agreement. I don't meet any of the two requirements.
The support pages for Western Digital and Seagate (my new external hard drives) say that there are no extra drivers needed, and that Windows 7 64-bit should recognize them right away.
The support pages for Microsoft say that if a driver is not installed properly or found, the device manufacturer should be contacted.
So that only leaves Internet forums as a source of ideas and suggestions.

Working solution on win 7 32 & 64 with driver lj1010serieshb-vista, did as follow:
connected printer, windows tried to auto install and failed, device was listed as unspecified.
googled for lj1010serieshb-vista(32/64).zip driver, downloaded from hp website, unzipped and extracted files.
Start > Run > PrintManagement.msc , then Print Servers > Localhost , right click on drivers > add driver > next > choose x86/x64 > next > have disk > browse to location of extracted
files, select hpc1015e.inf > ok > select hp laserjet 1010 hb > next > finish
Repeat above process and this time select select hp laserjet 1015 hb > next > finish , this step is needed as stated on previous post some files are missing on the 1010 driver and adding 1015 fixes the problem.
Now back to Devices and printers , right click on the unspecified device > troubleshoot > then will ask to search for driver, select "apply this fix" , it will find and install the correct driver from previous step > then will ask to set printer
as default, select "apply this fix" > then will ask if you want to share printer, select "skip this fix" if you don't want to share > close troubleshooter.
Now i have perfectly working printer, 'preferences' is working and not crashing win explorer and printer doesn't hung.
I guess you could first add the two drivers to your system before
connecting your printer and it would install perfectly but who would though this old printer would not work trough windows update.
thanks to the people who went by trial and error to find a working solution.

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Message was edited by: B0Om

B0Om wrote:
ok but i still dont understed, only my itnes recongnize my ipod, when i go to " my cumputer, it dosent show up there, not even as a digital camra
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