Scroll bar on asus mouse pad not working

you might have to reset it
Most modern laptops with touchpads offer vertical scrolling, horizontal scrolling or both. These features are located along the right-hand and bottom edges of the touchpad, respectively, and are activated when you swipe your finger along the touchpad edge. Scrolling functionality is nearly always enabled by default, but some users find the feature an annoyance and elect to turn it off. In most cases you can simply turn the feature back on using the Windows Control Panel.

Click the Windows Start button, select "Settings," and then click "Control Panel." Double-click the icon labeled "Mouse." Select the Touchpad properties tab. The labeling of this tab varies, depending on your computer manufacturer, operating system version and the device drivers installed on your machine. Common labels include "Touch Pad," "Device Settings" and "Dell Touchpad." If you do not see this option, you may not be able to turn on scrolling for your laptop; skip the remaining steps and refer to the "Warnings" section below. Click the "Settings" button within the Touchpad Properties menu and look for the section labeled "Scrolling Settings" or similar. Enable scrolling within this section and define other scroll settings, such as scroll zone width and scrolling speed. Click "OK" to confirm your changes, and then close the Control Panel windows opened in the previous steps. The scrollbar on your laptop is now enabled.
Scroll Is Not Working With Windows 7 b> Certain computer touchpads have a vertical section on the pad itself that is used to scroll through the page or program window that you are currently viewing on your computer. If the scroll functionality suddenly stops working but the actual touchpad is still fine, this means that the part of the software for the device that controls the ability to use the scroll has been disabled. You can enable it again in the Control Panel.
Click "Start." Click "Control Panel." Click "Mouse." Select the "Enable Scroll" option (or whatever similarly named option is available on your specific model of laptop computer). Click "Apply." The scroll bar on your touchpad will now work again.

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Most modern laptops with touchpads offer vertical scrolling, horizontal scrolling or both. These features are located along the right-hand and bottom edges of the touchpad, respectively, and are activated when you swipe your finger along the touchpad edge. Scrolling functionality is nearly always enabled by default, but some users find the feature an annoyance and elect to turn it off. In most cases you can simply turn the feature back on using the Windows Control Panel.

Click the Windows Start button, select "Settings," and then click "Control Panel." Double-click the icon labeled "Mouse." Select the Touchpad properties tab. The labeling of this tab varies, depending on your computer manufacturer, operating system version and the device drivers installed on your machine. Common labels include "Touch Pad," "Device Settings" and "Dell Touchpad." If you do not see this option, you may not be able to turn on scrolling for your laptop; skip the remaining steps and refer to the "Warnings" section below. Click the "Settings" button within the Touchpad Properties menu and look for the section labeled "Scrolling Settings" or similar. Enable scrolling within this section and define other scroll settings, such as scroll zone width and scrolling speed. Click "OK" to confirm your changes, and then close the Control Panel windows opened in the previous steps. The scrollbar on your laptop is now enabled.
Scroll Is Not Working With Windows 7 b> Certain computer touchpads have a vertical section on the pad itself that is used to scroll through the page or program window that you are currently viewing on your computer. If the scroll functionality suddenly stops working but the actual touchpad is still fine, this means that the part of the software for the device that controls the ability to use the scroll has been disabled. You can enable it again in the Control Panel.
Click "Start." Click "Control Panel." Click "Mouse." Select the "Enable Scroll" option (or whatever similarly named option is available on your specific model of laptop computer). Click "Apply." The scroll bar on your touchpad will now work again.

The thing is that you need to start up the program. Figured that out myself a few moments ago. Go to; C:\Program Files\Elantech\ETDctrl.exe Try googling about how to add it as a startup program as I'm not sure about how to do that. Hope this helps.

what OS, XP? operating system? is it?
using only one mouse? the built in mouse pad or it and a plugin mouse at USB port? or external wireless mouse.
we cant see what you have there, nor what are are using now.

if the PC is not infected.
click control panel, the click mouse icon there, bingo change mouse actions.
or reload the HP mouse driver.

The "Touchpad is very sensitive; if you look while scrolling, the "scroll-bar" will turn (Blue), click on the ("scroll-bar"), until it turn "Gray." Note: "You ca use the Pointer Device / Touchpad without using the Scroll-bar, basically anywhere on the screen; ("bottom scroll-pad" = left to right"), and ("right -side edge scroll-pad = up & down").

you may be able to fix this by going to control panel and then mouse settings
you also may want to check your driver by right clicking my computer properties hardware then device scroll down till you find your mouse thrn right click and update driver

Try simply using a system restore to before the problem started acting up. Also, you can try going into the mouse properties (Start Menu, Control Panel for Xp) and look for scrollsettings there, which may allow you to turn off certain mouse features (aka. if gestures are enabled it might be conflicting with scrolling).
Hope this helps.

The option to enable or disable the scrolling option for the notebook touchpad is generally available by going to the Control Panel, then selecting Mouse. Within that area, go to Device Settings, select the touchpad from the list of available devices, then click Settings. There should be an option for "virtual scrolling" - click on it, and you should be given the options to turn on or off both horizontal and vertical scrolling for the touchpad control.

hold down the fn key and press the scroll button.