Dell M501R won't boot into Windows

I've got a few month old Dell M501R that won't boot into Windows 7.

This morning when I turned it on a screen came up that said "Windows failed to load." It went on to say that a recent hardware or software change may be causing the problem and that a required device is inaccessible. I didn't write down the numbers it gave and it's now at Best Buy for repair, being that I purchased it there. I had not made any hardware or software changes before receiving this message and had no virus problems or other issues.

I did a complete restore that reformatted the hard drive using the recovery discs that BB created. After the restore, it went into the initial setup screen and everything seemed to be working fine. Once getting all the initial settings setup, I decided to reboot to make sure the problem was fixed. Sure enough, Windows failed to load again. I did yet another complete restore from the discs with the same result.

Since it's under warranty, I took it in to Best Buy where I purchased it and explained the problem and the steps I had taken to their Geek Squad people. They ran a quick diagnostic on it which showed that the hardware was fine. They said they would keep it and perform a more thorough test on it and that if the hardware shows as fine, any repairs won't be covered my the manufacturer's warranty. I asked them what fix they perform if the hardware is fine and was told that they do a recovery from the recovery discs, which I would have to pay for. Keep in mind, I had already done this at home twice with no success.

So, has anyone else had a similar problem and if so, what was the remedy? If they tell me the hardware is fine and want to charge me an arm and a leg to do what I've already done twice, what is my next move? How can I approach Dell if the problem is not fixed?

 

Started doing some research online late last night on the wife's laptop. Found out that it's either a problem with the BIOS or the boot system and not usually a hardware issue.

I went and picked the laptop up from Best Buy before they ran anymore tests on it this morning. Got home, powered it up and went into the BIOS and reset to the default settings. No dice. The other way to fix the problem according to what I read was to use the Repair My Computer feature on a Windows 7 install disc. I thought great, I don't have one of those, all I have are recovery discs that I already tried. Then I remembered I have a Windows 7 Pro upgrade disc that I bought to upgrade my old HP DV9030 to Windows 7 Pro for a job I had. I crossed my fingers, hoped it would work and sure enough, that did the trick!