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If you cannot locate the driver on Dell's website, you can use the Windows 7 mouse driver for this mouse and all the features will still work. Try this:
Go to your Device Manager > Choose "Mice and other pointing devices >"Click the name of the Dell mouse you'd like to update. Click the tab labeled "Driver" and then click "Update Driver." Select "Search automatically for updated driver software." Follow the onscreen instructions to update the driver.
Font size and Zoom control are controllable on several laptops models and browsers with the combination key-and-mouse combination of CTRL and the mouse Scroll Wheel. If your scroll wheel functionality on your Toshiba laptop is also governed by your touchpad and IF that touchpad is malfunctioning, then whenever you activate the Zoom feature keys (CTRL, "+", or "-" keys), then it is possible to zoom the text on certain browsers or increase the font size in certain MS Office products, like Word.
Replacing the palmrest-and-touchpad assembly might be one possible solution but you might also be able to verify/test for a failing touchpad by deactivating it's scolling feature in whatever Toshiba Mouse Utility software that they installed on the machine or look for it in the touchpad and/or mouse settings in the control panel. If it can be deactivated, and your problem goes away, then you know the touchpad (or its driver) is faulty.
Also, test it in Safe Mode. If the problem does NOT exist in Safe Mode, then your hardware is most likely OK and it's a sofware issue (such as driver, software, or utility).
Depending on the format of the manual you downloaded... it is always possible to "zoom in" to make the text bigger and easier to read. If you use windows and have a scroll mouse, you can hold CTRL and then use the scroll wheel on your mouse to Zoom in and Out... so long as the window you want to "zoom" is the active window.
Otherwise there is nothing else anyone here can do without the model information of your remote and TV.
You can download/print the complete manual for your scanner by following the link below. It's a free download, and it provides detailed programming instructions. If you're programming a channel that is "empty" (showing 000.0000) just enter your frequency. Empty channels automatically show LOCKOUT but it clears with programming. The squelch setting will vary according to the strength of the signals you receive. Once you start scanning, turn the squelch down until scanning stops and you hear a hissing sound, then turn the control up slowly until scanning resumes.
For a comprehensive database of active frequencies in your area, visit:
DO THE FOLLOWING AND THERE BE NO MORE FRUSTRATING RANDOM ZOOMS.
step 1: Go to CONTROL PANEL. step 2: under hardware and sound select MOUSE (mouse properties box) step 3: select the DEVICE SETTINGS TAB (at top right) step 4: select SETTINGS. step 5: select the +box next to POINTER MOTION, then under momentum select PINCH.
step 6: DESELECT ENABLE PINCH. step 7: press apply and ok.