Dell Latitude E5500 "OS reinstall issues"

Hello everyone,

We have a Dell Latitude E5500 Laptop here at work. One of our employees was using the computer before, but we got her a new one. When I got the laptop it had a lot of problems. All of our computers are freshly rebuilt after they have been used by an employee for awhile.

I went to install Windows 7 64bit onto the laptop. The laptop had Windows XP SP3 on it before from when we used Windows XP for all of our systems. When I tried reinstalling the OS it would always freeze at the "Accept Terms & Conditions" at the begginning of the install. I could not get past this area. We have a few Windows 7 64bit CD's. All are good and I use them every week, but are all doing this on this laptop.

I have been able to get past the terms and conditions page if I wait about 10 mins. I don't know why it won't let me click on anything before that. Once the laptop is finished loading the OS I can't click on the Taskbar or any files once I have "my computer" internet explorer or anything up. I have to navigate everything through the keyboard which is not accetable.

Disk Management says the HDD is healthy.
Updated the BIOS to A018 "latest BIOS update" through using the keyboard to get the file open.
Updated all Drivers from Dell navigating with the keyboard.
Went into the BIOS and told it to use Default settings.
Cleaned the Memory off.
Ran the Dell Diagnostics as far as I could. The Diagnotics and everything came back Passed with no errors.
I wipped the HDD with Acronis and figured I would reinstall again.

I have nothing hooked up to the laptop except the power supply and got the same issue.

The laptop does this on ANY OS I try loading it with. "Windows XP, 7 Pro 32bit & 7 Pro 64bit.
I even tried a known good SSD we have and the same issue, so this is not Hard-Drive related for sure.

We have no warranty on this laptop anymore & are thinking of decommisioning it if we can't get this solved.

Any other suggestions? I've tried everything I can think of and have available to me for testing.
BTW our OS disk are Dell OS Disk for Windows XP, and Windows 7 32bit & 64bit.