Yesterday I was installing a number of fonts on my Windows 7 machine. I had installed 5 or 6 of them without incident, and then on the 7th just as I clicked "install", I got a BSOD with something about a memory error. I assumed it was just a one time hiccup so I restarted and attempted to install the font again, with the exact same results. I figured the font was somehow corrupt so I deleted the file from my desktop and looked in the Windows font folder to see if I needed to remove it but found no trace of the offending font.
I next attempted to launch Photoshop CS5 and got a crash dialog before it ever launched. This behavior is currently continuous and I can't get PS to load at all. Illustrator however doesn't seem to have any problems and launches without incident.
Also, if I try to access Windows Device Manager, I now get an error "MMC cannot open the file C:\Windows\system32\devmgmt.msc".