Question about HP Pavilion dv9720us Notebook

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Only displays when powered up with screen at 30 degrees

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Are you saying the backlighting isn't working? Or is it the on/off switch the controls the backlighting when the lid is closed or opened? Maybe tis will help: http://www.youtube.com/watch?v=2Yi6GNFcP3w Has it been dropped, jarred, bumped? Fell over? There is a ribbon cable in the rear of the monitor that can be loose.

Posted on Jan 12, 2013

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Posted on Jan 02, 2017

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1 Answer

My laptop won't start up it turns on but then nothing


Unplug the power, remove the battery and then hold the power button for 30 to 60 seconds. Then reattach the power and attempt a boot.

If it boots, then shutdown, add battery and restart.

The laptop's screen display may remain black when there is a corrupted graphics driver, or a problem with the LCD display's back light. (Try tilting the screen to 30 degrees and see what happens.)

It could possibly be that your outputting to the wrong screen - most laptops have a "Fn" button that can be pressed in conjunction with a little screen on the keyboard to switch to either internal display or external (say F1 or F2).

Mar 04, 2015 | Computers & Internet

1 Answer

My Samsung n120 screen is displaying only vertically - how do I go back to horiz display?


Computer users occasionally have a need to rotate, or "flip," a monitor display to be better able to read long documents or to view pictures. Because rotating a computer screen is such a basic function, modern operating systems (Windows XP and up) include hot keys and display options that enable the user to rotate the computer screen by 90, 180 and 270 degrees. Rotating the computer screen allows for more display options. For instance, when rotated 90 degrees, a 1680x1050 monitor becomes a 1050x1680 monitor, which provides more vertical pixels than a standard display.

Windows XP/Vista Monitor Orientation
Minimize any windows or programs to the taskbar. Click the desktop. Press "CTRL" + "ALT" at the same time. Press one of the arrow keys to flip the monitor orientation by 90, 180 or 270 degrees. The left arrow rotates the computer screen 90 degrees; the down arrow rotates the computer screen 180 degrees; the right arrow rotates the computer screen 270 degrees; the up arrow resets the monitor orientation. Rotate the computer screen in Windows Vista by opening the Control Panel, searching for "Tablet PC" and changing the "Orientation" drop box to the desired rotation. b> Windows 7 Monitor Orientation b> Click the Start menu at the lower-left hand part of the screen, and open the Control Panel. Select "Display," then click "Change display settings" from the left column. When using multiple monitors, select the monitor that you would like to rotate. Click the drop box next to the "Orientation:" option. Select the desired rotation and click "Apply." Click "Keep Changes" or "Revert," depending on preference. Click "Apply" in the Display Settings window. Click "OK" to finish.

Feb 15, 2013 | Samsung N120-12GW Netbook

1 Answer

My screen does not flip 180 degrees when i turn the screen around


Computer users occasionally have a need to rotate, or "flip," a monitor display to be better able to read long documents or to view pictures. Because rotating a computer screen is such a basic function, modern operating systems (Windows XP and up) include hot keys and display options that enable the user to rotate the computer screen by 90, 180 and 270 degrees. Rotating the computer screen allows for more display options. For instance, when rotated 90 degrees, a 1680x1050 monitor becomes a 1050x1680 monitor, which provides more vertical pixels than a standard display.

Windows XP/Vista Monitor Orientation
Minimize any windows or programs to the taskbar. Click the desktop. Press "CTRL" + "ALT" at the same time. Press one of the arrow keys to flip the monitor orientation by 90, 180 or 270 degrees. The left arrow rotates the computer screen 90 degrees; the down arrow rotates the computer screen 180 degrees; the right arrow rotates the computer screen 270 degrees; the up arrow resets the monitor orientation. Rotate the computer screen in Windows Vista by opening the Control Panel, searching for "Tablet PC" and changing the "Orientation" drop box to the desired rotation. b> Windows 7 Monitor Orientation b> Click the Start menu at the lower-left hand part of the screen, and open the Control Panel. Select "Display," then click "Change display settings" from the left column. When using multiple monitors, select the monitor that you would like to rotate. Click the drop box next to the "Orientation:" option. Select the desired rotation and click "Apply." Click "Keep Changes" or "Revert," depending on preference. Click "Apply" in the Display Settings window. Click "OK" to finish.

Jan 28, 2013 | Panasonic Toughbook 19 Rugged Notebook -...

1 Answer

How do I use the arcsine function to transform compass degrees


Cristina,

You might be referring to something else, so let me try to knock out two birds with one stone.

The arcsine function is the inverse sine function. It will take a ratio input and produce a degree/radian output. It isn't exactly transforming anything into degrees. Instead, it is telling you the corresponding angle that goes with the ratio of opposite over hypotenuse (your input).

With that said, I am going to try to answer your question with two possible solutions.

1. To find the arcsine of a value/input (between -1 and 1) you simply have to press {[2ND]} {[SIN]} {["NUMBER"]}. For example, if I wanted the arcsine of one-half I would press {[2ND]} {[SIN]} {[.]} {[5]} {[=]}. The computer would display 30 (degrees) because the sine of thirty degrees is one-half, therefore the arcsine of one-half is 30 degrees. Inverse functions in math are often written with a faux-exponent of negative one. Inverse sine (ie arcsine) should be written in blue above the sine button on your calculator.

2. To convert a compass reading into a concrete degree measure you will NOT use arcsine. Instead, you can use the Degree-Minute-Second key which is on the TI-30X. The degree portion is naturally symbolized by the superscript o; the minute is symbolized by the single apostrophe mark, the second symbol is the quotation mark. So, to convert a compass reading of 10 degrees-30 minutes - 30 seconds you would type {[10]} {[o ' "]} {[=]} {[30]} {[o ' "]} {[ -> ]} {[=]} {[30]} {[o ' "]} {[->]} {[->]} {[=]} {[=]}. The calculator should display 10.50833333, which represents the hardcore angle measure that corresponds with 10-degrees-30minutes-30seconds. Also, it should be known that this is a much better thing to do by hand because it will deeply ingrain the basic mathematics going on. Even though we're talking about degree measures, the minutes & seconds are still at a 60 unit benchmark: meaning that there are 60 minutes in a degree and 60 seconds in a minute. Therefore, 30 minutes & 30 seconds is 30.5 seconds, which is 50.83333 percent of 1 degree. Thus, 10.5083333 degreeees. Also, you can think of it as 3600 seconds in a degree, therefore you had 1830 seconds which equated to 50.83333% of 1 degree. Thus, 10.50833333 degrees total.



Alright...I hope that helps you with either question you might have been referring to. Also, I hope you enjoyed the minor math lesson involved here. Maybe you already knew it. If that was the case then I am sorry. Either way, I own a TI-30XB Solar (among many other TI Calculators) and I highly doubt that the buttons on my calculator are starkly different from yours.

If you have more calculator or even math questions just post them on here and I'll hack away.

Arrivederci.


The Math Cheetah
www.THEMATHCHEETAH.com

Feb 27, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

How do i calculate cos 30°24'


You must first set angle unit to degree.
Press the [MODE] key a certain number of times until you get to a screen that displays Deg Rad Grad. Press number key 1 to select degree.
Once this is done you can calculate trigonometric functions. To enter angles in DMS you have a key marked with degree symbol, a quotation mark, and a double quotation mark. In what follows that key is represented as DMS.

To calculate cos(30 deg 24')
[COS] 30 [DMS] 24[DMS] [=]

If you get an error message you will have to enter the seconds even if the value is 0
[COS] 30 [DMS] 24[DMS] 0 [DMS] [=]

Sep 11, 2010 | Casio FX-300MS Calculator

1 Answer

What is 28 times cot 30


Use the relation cot(30) =1/tan(30).
Press [DRG] to set the correct angle unit (degree, radian, or grad). If you are working with degrees the DEG display indicator should appear on screen

You then type
28 [/] ( 30 [TAN] ) =

Aug 27, 2010 | Texas Instruments TI-30XA Calculator

2 Answers

DV9000 Black Screen


You just need to diable presentation mode.It's not the switch.

Mar 22, 2009 | HP Pavilion dv9000t PC Notebook

1 Answer

Screen does not display


I had the same problem. more than likely your connector cable between the camera and the display has become brittle over time and is beginning to break. as you open the screen the small wires inside the cable are separating. mine went from 30 deg view to 90 deg no display as yours is now, then 30 deg fuzzy display (cant make out the picture like a VHS when it needs heads cleaned) then the cable gave in and snapped. all the way through. Simply not a lasting camera. I got quotes and it was about $200 to fix. for that price these days u will pick up a better camera anyway. Good luck

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2 Answers

Default temperature settings


if it is anything like a monitor - look on the right side bottom for a slider - reset temperature adjust. just move the slider to a lower temperature. if you have a power outage, the display starts to flash 88:88

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