How do i change text size on my gateway pc

What font are you referring to? Have you prepared a document in a word processing program, or added text to an image file, and are disappointed because you want to see the text printed larger? If so, your best solution is to edit the document or image and change to a larger text size. For example, most text documents will normally default to either a size 10 or 11 text which is readable but small. Changing to size 12 or 14 will make the text look larger onscreen, and the text will also print larger. The font name and font size should be displayed on one of your processing program's toolbars, and is easily changed to a different font name or size. If you are simply copying an already printed document and want the text to appear larger, you should refer to your printer's User Guide. If you don't have the User Guide, you can download a free copy at this link:
HP PSC 1510 All in One Printer User guides

You can change the view size in Windows 8 in the following ways:
1) By changing the size of text and other items on the desktop
You can change the size of text and other items (like icons) on your desktop without disturbing your current screen resolution settings. To do this, follow the steps mentioned ahead:a)Open Screen Resolution by swiping in from the right edge of the screen, tapping "Search" (or if you're using a mouse, pointing to the upper-right corner of the screen, moving the mouse pointer down, and then clicking "Search"), enter "Make text larger" in the search box, and then tapping or clicking "Make text and other items larger or smaller".
b) Drag the slider until the items in the preview image are the size you want them to be.
c) Tap or click "Apply".
You'll see the change the next time you sign in to Windows.
Also, you can change the text size for specific items (such as Window title bars or tooltips) without affecting the size of anything else on your desktop. Follow these steps to do this:
a) Open Screen Resolution by swiping in from the right edge of the screen, tapping "Search" (or if you're using a mouse, pointing to the upper-right corner of the screen, moving the mouse pointer down, and then clicking "Search"), entering "Make text larger" in the search box, and then tapping or clicking "Make text and other items larger or smaller".
b) Under "Change only the text size", choose the item you'd like to change and pick a text size. If you want the text to be bold, select the "Bold" check box.
c) Tap or click "Apply".
You'll see the change the next time you sign in to Windows.
Note: To view a pictorial description of the above process, refer to the link:
http://nvidia.custhelp.com/app/answers/detail/a_id/3153/~/adjusting-windows-8-display-size%2Fscaling-for-high-dpi%2Fppi-monitors
2) By changing screen resolution
You can change the view size on your desktop by changing screen resolution settings. To do this, follow these steps:
a) Swipe in from the right edge of the screen, tap "Settings", and then tap "Change PC settings" (If you're using a mouse, point to the lower-right corner of the screen, move the mouse pointer up, click "Settings", and then click "Change PC settings").
b) Tap or click "PC and devices", then tap or click "Display".
c)Tap or click the resolution slider and drag it until you find your desired resolution.
d) Tap or click "Apply".
To know more about the best screen resolution settings for your desktop, refer to "Set your monitor to its native resolution" section on the following link:
http://windows.microsoft.com/en-IN/windows-8/get-best-display-monitor

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please clarify; what kind of operating system your using? text size of what? application software like word or Computer screen display? for windows screen text you can enlarge by entering control panel-appearance and personalization for win7&win8 - display make item small or larger or by changing screen resolution

Right click and select the screen resolution option then on the left u can see the option make items smaller or larger and select the larger option [125].

This solution is for windows 7

To make the text on your screen larger or smaller

Open Screen Resolution by clicking the the Start button, clicking Control Panel, and then, under Appearance and Personalization, clicking Adjust screen resolution.

Choose one of the following:

Smaller - 100% (default). This keeps text and other items at normal size.

Medium - 125%. This sets text and other items to 125% of normal size.

Larger - 150%. This sets text and other items to 150% of normal size. This option appears only if your monitor supports a resolution of at least 1200 x 900 pixels.

Click Apply.

To see the change, close all of your programs and then log off of Windows. This change will take effect the next time you log on.

You can change the size of the text by going to the Start menu, then Control Panel. Click on Display, and then from there you can change the size of the text. It increases the DPI of the text so that it's larger.

If you mean you want to see the text in your internet browser larger, then in Internet Explorer explorer left-click 'View' (in toolbar next to 'Edit') and then slide down to text size and select larger or largest. In Firefox, select Tools, then Options, then Conten (third tab on top), then change the font size by selecting a larger number from the drop-down menu that currently should be shoung a number across from the font type (like Times New Roman). Sorry I can't increase the size of this text for you to read this solution.

P.S. Both I.E and Firefox have zoom functions under 'View' to temporarily zoom in or out on text and images.

To increase the Font size in Internet Explorer, open IE and click on View>Text Size and select "larger". If you want to increase the fonts size of the Windows itself, then you can decrease the resolution of the video adapter. To do so, Right click on empty space on your computer desktop> Properties> Click on settings> Under "Screen resolution" make it to lesser and click OK.

If you are using internet explorer, you can hold down the Ctrl key and hit the - key to make the text smaller or the + key to enlarge the text. If you have a wheel mouse, hold down the Ctrl key and turn the wheel on your mouse, and that will make it larger or smaller. If you can get to the view tab click it then text size, I have mine set on medium. Good Luck.