Well, to be perfectly honest I've had to do that a few times in order to finish a job and get paid! But, I didn't feel very good about it! My goal is to be 100% accurate on rebuilds, but sometimes you just can't fix the problem.
What version of Windows came with that Elitebook??
I would suggest the following:
1) Make sure your Win7 Professional is at SP1 level--you didn't mention. There are over 900 updates in SP1, and that causes lots of problems with older driver incompatibilites when you use Auto-Update downloading.
2) Is the Win7 Pro media you installed from a copy or an Actual Microsoft Disc with the little Hologram on the box or disc? If a copy, inferior media can cause read errors and sometimes driver cab expands can get scrambled during the install.
3) Have you checked to see if there is a BIOS update for the Elitebook model at the HP website (support.hp.com)? If so, did you apply the BIOS update?
4) When you installed the BIOS Update *if applicable*, did you install it before or after the Chipset drivers? Recommended order is to ALWAYS install the BIOS Update first, Chipset drivers 2nd, and all other drivers after; usually I do top-down approach on the alphabetical build list when you build your drivers disc after download before burn to disc. Audio, Video, Modem, Network, USB Controller, etc. **this is crucial, because it you install your BIOS update out of order, the older drivers will write over the Registry Keys and chaos ensues!**
5) This is probably silly, but I see Customers that do this--did you install the correct Win7 Pro OS type onto the Elitebook hard drive; I mean did you load 64bit Media onto a 64bit laptop? Usually if you try to install 64bit Media onto a 32bit CPU it will error out. However, if you try the reverse; install 32bit Media onto a 64bit CPU, Windows7 will not tell you, and it may allow it--I have a Toshiba on my bench right now where the Customer did this. And very squirelly things happen on it--but all hardware diags pass ok. It took me days to figure it out.
Post back your answers to my questions, and we can help you figure it out. If it were me, I would try a rebuild following my recommendations in terms of installation order, and if it still didn't work I would run complete exhaustive hardware diagnostics looking for problems in Hard drive, Motherboard, RAM, etc. Generally speaking, you should be able to get both of those failed drivers to "recognize" properly, but only if all else in your hardware is ok, especially a BIOS update being properly applied.
Cheers!
BIGBEARJEDI