Yet another "Windows cannot copy files to this disk" message

Hello,
I'm trying to install Windows 7 64bit to HP dc7800 Ultra slim desktop PC from USB flash drive (since PC hasn't got CD/DVD drive). At the partition selection step I get message "Windows cannot copy files to this disk".
I've already googled a lot and read this forum topics, but still can't overcome this issue.

I've tried the following:

• format HDD and create partition table with DISKPART via win7 disk command promt,
• format HDD and create partition table with GParted (creating to primary patition: ~50 GB NTFS '"WIN7" and ~100 GB NTFS "DATA",
• wipe all data from HDD writing random data,
• create bootable USB flash with different tools (Windows 7 USB/DVD Download tool, Novicorp WinToFlash),
• memtest86+ both operating memory modules (2 x 2GB) for 6 passes,
• leave only one module connected to motherboard (with each),
• reset CMOS setting in 3 ways (via BIOS, removing power cable and CMOS battery, pushing CLR_CMOS button on motherboard),
• set HDD as the first boot device

but nothing helped.

I've searched in BIOS for different HDD emulation modes (AHCI, IDE), but the only present setting present:
Storage -> Device Configuration -> Hard Disk (SATA0):
Emulation type: Hard Disk, None,
Multisector Transfers: 8, 16, Disabled,
Translation Mode: Off, Automatic, Bit Shift, LBA Assisted, User.

What can I do? Your help is appreciated.

UPD:
Tried removing USB flash key and refresh the partition list in partition selection menu. Didn't help.
Checked HDD with built in HP DPS selft test tool in BIOS.

gregrocker, thank you for helping me. :)
Following your advice,
> "If this fails try moving HD to another PC to install, then if it won't start on the HP Adjust Win7 to boot on new hardware with Paragon Adaptive Restore CD"
I found out, that my HP 4540s has a SATA connection for HDD, so I will try now this option and message in this thread about the results of my experiment.

Results:
1. The installer allowed to install OS Win 7 64x on partition.
2. It has created a "system reserved" partition 0 before primary installation partition. This didn't happen while partitioning on HP dc7800 from USB. Can this cause the problem? And how can I avoid this?
3. Installation ended successfully. Now I will try to migrate to the HP dc7800.
3.1 At the fresh installation of Windows 7 I run sysprep. It took too long and the task manager showed no activity. After restarting the system sysprep causes message "A fatal error occured while trying to sysprep the machine". Following this steps and MS hotfix didn't help, too.
3.2 Installing the drive to the HP dc7800 and running it causes reboot on Windows black start screen.
3.3 Trying to install Windows 7 on the HP dc7800's hard drive with a new boot partition...

Continue tommorow

> "Can you install the native Vista 32 bit on there? If so it may be easier to upgrade BIOS.
Can you try Windows 7 32 bit?"
I will try this anyway.

Is there any way to run Paragon adaptive restore 2010 from USB drive?

It's possible to make bootable USB with a similar Physical-to-Physical (P2P) EASEUS Todo Backup software.