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Old 05-12-2009, 03:03 PM
Sampiro Sampiro is offline
Join Date: Aug 2002
Posts: 36,258
How do you make an upside down computer screen right side up again?


A student in the computer lab here at work made a boo-boo. She has no idea what she did and neither do I. I've never seen this before.

The image on the screen is upside down.

The mouse works upside down. (The pointer on the cursor is right side up, but it works opposite of how you move it.)

This is a multiple access computer that requires an individual student log in, but when rebooted even the "press CTRL ALT DEL" image is upside down.

Has anybody ever seen this or, more importantly, does anybody know how to correct it?
Old 05-12-2009, 03:08 PM
ultrafilter ultrafilter is offline
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Location: In another castle
Posts: 18,988
Hit ctrl+alt+up to fix it.

Last edited by ultrafilter; 05-12-2009 at 03:09 PM.
Old 05-12-2009, 03:09 PM
FalconFinder FalconFinder is offline
Join Date: Jun 2001
Location: Illinois
Posts: 578
Don't have a solution, but this does remind me of an old practical joke program from back in the late 80's early 90's. It either ran off the floppy drive or I think you could install it and run it from the AUTOEXEC.BAT file.

It would flip your screen upside down. We all thought it was hilarious and pranked each other at work all the time. You couldn't actually use the computer in it's upside down state, though.

For giggles, I did a Google search and found this:

Good luck!

Double post. This link does talk about the above fix, plus some more.

Last edited by FalconFinder; 05-12-2009 at 03:10 PM.
Old 05-12-2009, 03:12 PM
Eutychus Eutychus is offline
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If all else fails, turn the monitor over.
Old 05-12-2009, 03:15 PM
FORTRAN forever FORTRAN forever is offline
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Posts: 104
I have to confess that hy first reaction to this was "Naah, com on, that can't happen". Then I googled "Windows Screen Upside Down" and found all sorts of web sites discussing this phenomonon. Unfortunately, they all seemed to offer different causes (and therefor solutions) to the problem, so I'm going to suggest that you google something like this on a computer near your problem one and start wandering through the various solutions.

Good luck, and let us know how things worked out!

(OK, never mind. I see that other folks entered better solutions while I was typing the above.)

Last edited by FORTRAN forever; 05-12-2009 at 03:16 PM.
Old 05-12-2009, 03:24 PM
Sampiro Sampiro is offline
Join Date: Aug 2002
Posts: 36,258
Got it, thanks. After posting here I googled upside down screen and several sites came up.

In case anybody ever has the question again the steps are:

-Right click on desktop

-Select Graphic Properties

-Select Display Settings

-Click off 'Enable Rotation'


The student, who's a computer novice, was frustrated because the computer was clocking earlier and pushed several buttons trying to "unfreeze" it and evidently found a CTRL ALT Gr Up Cuckoo for Cocao Puffs sequence that activated the upside down rotation. I'm just thankful she didn't activate the self destruct mode as that would have blown away that side of the building (we use way too much plastique and magnesium in our self destruct properties as I've been telling them for years).

Thanks to all!
Old 05-12-2009, 03:28 PM
Sampiro Sampiro is offline
Join Date: Aug 2002
Posts: 36,258
What had the students in the lab laughing was me and my boss (picture Judi Dench) trying to fix it and discussing it. We really weren't meaning to sound like a Monty Python sketch and weren't even joking but it was a funny exchange.

Judi: Why would they have that as an option even? When would you want to have the display upside down?

Me: No idea. On a space craft maybe?

Student: Well even in space you couldn't see it right...

Judi: Yeah, but if you were in zero gravity then you could float upside down...

Me: Of course it would make more sense to give astronauts some kind of technology like the I Phone where the display changes with the ship's rotation.

Judi: Well, it may be too expensive to re equip a space lab.

Me: Or maybe airplanes since they'll turn upside down.

Judi: Yeah but it would look right side up to the pilot.

Student: I wonder if they use it in that vomit comet thing where the jet goes roller coaster and simulates zero G/

All: I dunno.

Later I'll have to check out how the Backwards Google sites look on rotated screen.

Last edited by Sampiro; 05-12-2009 at 03:29 PM.
Old 05-12-2009, 03:31 PM
JSexton JSexton is offline
Join Date: Jan 2000
Location: Snowy Oregon
Posts: 4,758
One purpose is if you mount the monitor on a ceiling or underside of a cabinet.
Old 05-12-2009, 03:50 PM
yabob yabob is online now
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Rotating the image 90 degrees (or from "landscape" to "portrait") is reasonable, to accommodate rotating the monitor, if you would prefer a tall display. Some monitors are designed to do this as sold by the manufacturers, and you can also buy aftermarket mounts that allow it. To support them, the driver writer probably also allows the image to be rotated either clockwise or counterclockwise, to accommodate whichever way the monitor is rotated. At that point, it probably is no extra effort to implement the "complete" set of rotations, and seems like the logical thing to do, in spite of the fact that you can't think of any very good reasons why somebody would want it upside down.
Old 05-12-2009, 05:45 PM
Chronos Chronos is online now
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One purpose is if you mount the monitor on a ceiling or underside of a cabinet.
Are mirror-image flips implemented, too? Some arcade cabinets have the screen facing up, and reflected in a diagonal mirror.


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