C905 reversed upside down screen

Have you tried a factory reset yet? That can help.

Wow. Just wow. How did that person do that?! Anyways, try resetting ALL of the memory, and see if that helps, if not, ask the student what she did so that it can be reversed (probably by doing the same steps in the opposite order.

no solution I know and I have the same problem!!! Did you find a solution yet???

Use the remote to go into the menu and change the screen position. There are 4 to choose from, flip left, flip right, flip upside down left, flip upside down right. It may be tricky to navigae the menu backward though.

My Samsung U700 had the same problem (display went back-to-front and colours all reversed and low-res.) It seems to be a problem with the flex cable (the cable between the main phone body and the sliding screen) wearing down and screwing up the data being carried between the display and the phone. Flex cables are cheap to buy and there's plenty of info online showing how to replace them yourself. Good-luck. Google: samsung u700 replacement flex cable

Flip your screen upside down too

http://forums.techguy.org/tech-tips-tricks/336002-windows-xp-flipping-screen-upside.html

Windows XP: Flipping the screen upside down and back again


Once, at University, someone had flipped the screens of all the public computers (running on Windows XP) of the English Department upside down. The wallpaper, desktop icons, fonts, mouse-cursor and even the start-up screen...everything was displayed or moved upside down. People could not check out their e-mails or surf or do anything.
To reverse the upside down screen mode, press ctrl, alt and the up arrow (arrows console) at the same time; the screen will probably go blank. Turn off the monitor, turn it on again and the display will be normal again. If you possess a sense of humour or are antisocial, press ctrl, alt and the down arrow simultaneously, turn off the monitor, turn it on again and everyone (excluding the culprit) will be desperate --> upside down! Works for Windows XP Home and Prof.

Upside down or just sideways? There is a "rotate" button on the bottom of the screen that allows you to go from landscape to portrait mode.

Has this just happened or has it always been like this? There appears to be a a fault in the main board and only replacement will cure- So may be if the camera is more than a year or so old- time for a new one. Meanwhile do speak to the Canon Tech Support on the Web site. And whilst the matter is still not resolved ,shoot holding the camera upside down- seriously - tell me what happens.

just happened to me, phoned customer support and solution is to press the Ctrl key and Alt key and Up arrow together and it should solve the problem