Welcome to the forum.
Thank you for the detailed post.
Just to make sure that the failure to launch PrE and the additional drives and drive letter changes are not coincidental, I would check your video driver with the mfgr's. Web site. Just go to that Web site, whether nVidia, or AMD/ATI, plug in your video card, and your OS, and verify that you do have the latest driver installed. If not, download and install it.
The reason that I am pointing you in this direction, is that one major cause of PrE to fail to launch is an obsolete video driver. Even an OS update can render the video driver obsolete, so if the OS updated, around the time that you made the changes, the video driver could be hamering PrE from launching.
If that does not help, I would then test by Rt-clicking on the PrE icon, and choosing Run as Administrator.
Good luck, and please report your progress.
I'm not sure what the problem was. I attempted to update my video drivers but I kept getting error messages. One of the messages referred to the F: drive, which had been changed to the E: drive. Eventually I decided to return to a previous restore point. After going back far enough for my drive letters to return to thier original lettering, which was even before the original install of PrE11, I was able to reinstall PrE11 and everything seems fine now.
Even though you now have Premiere Elements 11 installed successfully on your computer, I would ask
Are you using the original drive letters to move forward or the changed ones that you sought to use?
This is "most likely" not a Premiere Elements problem, it is a Windows problem of "something" in the system registry not being correctly changed when you rearranged your drives
If you ever need help with Windows, search at http://search.microsoft.com/search.aspx?mkt=en-US&setlang=en-US
John T, I agree about a Windows issue, and regarding Registry entries, that point to some absolute Path for components. When a drive letter, in an absolute Path changes, the Path is then broken. The success of assigning new drive letters, once the system has been setup, depends on exactly what is on the drive, and how that data is linked to the OS's Registry.
If those drives are empty, or contain only data, which is NOT linked anywhere, then it's an easy task to change the drive letters. If there is any data, linked to the Registry, well not so easy.
This was a custom build, the original OS was installed on two 60GB, 10,000 rpm stripped drives and then imaged, I guess, to a different drive. I was concerned about the lack of C: drive space (total 120) and had it changed (maybe mistakenly) to a single 320GB 7200rpm WD. BTW, I don't have a windows install disc for this system. I think I'll ask them for it.
As for the drive letters, they are back to what they were originally.
Things happen (such as hard drives dying) so you absolutely need a Windows install disc
Also, once things are working, you need to make a full backup image of your boot drive
The product I use is at http://www.terabyteunlimited.com/image-for-linux.htm
Image runs off of a bootable CD via Linux (the Zip you download includes a program to
make the bootable CD) and it reads EVERYTHING on the drive, even the hidden
registration information, so everything is restored when needed... and you may restore
the image to a brand new drive in case of a crash, and not have to re-install anything