They look a little stretched, but not the worst I've seen. Give them a couple days, since you lowered the lights recently and monitor the growth. I think they're looking a lot better than they were probably looking a couple weeks ago though.
If they're still stretching, lower the temp a little more around 78 the highest.
I also agree with Dirty, you should probably start LST'ing them soon here, if you plan on training them, but they look better than dead so you're still making progress lol =).
As far as your camera is concerned.....
Try another USB device in that same port and see if it connects, if not your usb port is fried. If not, check your drivers, go into control panel then system, then device manager and make sure there are no red or yellow markings by the usb category when you expand it. If it is driver related then just reinstall the driver or roll it back. You should be able to do this through your manufacturer's CD or website.
Also you can check Control panel then Scanners and Cameras (After you have connected your camera by USB) and see if your camera's name shows up in there. If it does you should be able to use the windows camera wizard to download the photos to your computer.
Probably should try the second suggestion on the computer first, then take it from there, kinda went backasswards on that lol.
Hope the computer info helps some and keep us updated for sure.