LAPTOPS&DESKTOPS: August 2011

Aug 16, 2011

TIPS

 Have a Laptop? Care Tips for Laptop Screens

The recent PC "refresh" cycle included 176 laptops to add to the 75 or so purchased in the
last year or two. Using a laptop is almost the same as using a desktop - almost.

The screen on a laptop is an LCD (liquid crystal display) composed of individual transistors
at every pixel (the tiny dots that make up the images on the screen). The screens of the
laptops we just purchased have 1,470,000 pixels. Each pixel is a separate transistor/liquid
crystal combination. If any one is damaged you will have a permanent black spot on your
screen. To be sure, the loss of a single pixel will not make your screen unusable, but if you
physically damage the screen you will probably lose more than a single pixel. The screen is
the single most expensive part of your laptop. Most damage to it is non-repairable. Replacing
it can cost $700 to $1,000, a substantial portion of the $1,483 cost of the most recently
purchased machines.

To keep your screen in good shape, stay away from it - i.e. do NOT poke it with your
finger - or even worse- with a pen or pencil. If you want to show something on the screen to
someone else, point "from a distance" or use your mouse and cursor to point to the item of
interest (incidentally, you can make your cursor much larger and/or change its shape if you
find it hard to see on the screen. Go to My Computer > Control Panel > Mouse). If you do
get fingerprints or dirt on your screen, you can clean it - with care and the proper cleaning
solution. Remember, your laptop screen surface is thin, flexible plastic, not glass. Do NOT
(repeat, do NOT) use glass cleaner. The ammonia that is a primary component of most glass
cleaners will eventually yellow the screen and make it brittle.

Your first attempt to clean a screen should be with a soft cloth (NOT paper towels)
dampened with water. If a gentle wipe with this does not work, then use isopropyl alcohol
(rubbing alcohol) at 50% or less (most isopropyl is 90-95% strength; just dilute it with an
equal amount of water). You can buy commercial cleaning solutions and cleaning pads for
computer screens - but make sure they specifically say "for laptop or LCD screens" -
otherwise they most likely contain ammonia and/or ethanol, both of which will damage your
screen.

And, of course, always pour the cleaning solution onto the cleaning cloth - never pour or
spray it directly onto the screen (where it may run off and damage electronic components).

The same care tips hold true for any LCD screen that you may have - for a desktop
computer or TV as well as for laptops.

If you are a new "owner" of a laptop, were unable to attend any of our recent Personal
Technology Consulting days, and have questions about your new machine, please contact
the Helpdesk for assistance.

10 Tips to make your Laptop Battery last longer

Computer Laptop Battery Care and Usage Tips for getting more from a notebook battery.

1. Turn off Wi-Fi and BlueTooth - Most laptops have shortcut keys to instantly disable wireless networking.

2. Don't play computer games, music or DVD movies - Multimedia activities drain laptop batteries.

3. Disconnect all external device like PC Card modems, Firewire, USB devices and optical drives. Use the notebook touchpad instead of an external mouse.

4. Adjust your screen brightness - Dimming your display saves battery power.

5. Tweak Windows Power Options - Choose a Laptop power scheme that turns off the notebook monitor and hard disk after 10 minutes of inactivity.

6. Decrease or mute the Laptop Speaker Volume.

7. Turn off all scheduled tasks.

8. Turn off Auto-save features in Microsoft Office and other applications.

9. If your PC has a built-in wireless card, turn it off or disable it when not in use.

10. Programs that are run from a CD or DVD can be copied to and run from the hard drive, which typically consumes less power than an optical drive.

Looking for the longest battery life laptop ? Actually, many factors affect the amount of time that a laptop battery can deliver power before it must be recharged.

How to extend laptop battery life? Here are some more tips to improve your notebook's battery life:

1. If you do not use your laptop for extended periods of time (a week or more), remove the battery pack from the laptop.

2. Do not expose the battery to high heat or freezing temperatures. Do not leave your battery in your car in the summer. Hot batteries discharge very quickly, and cold ones can't create as much power.

3. Make sure to plug your laptop charger adapter into a UPS and not directly into a power outlet or surge protector.

4. If you have a nickel-metal hydride battery, completely drain and recharge the battery once a month to maximize its capacity to hold a charge.

5. Fully charge new battery packs before use. New pack needs to be fully charged and discharged (cycled) a few times before it can condition to full capacity.

6. For laptops that work as Desktop Replacement, the battery should be re-installed every 3-4 weeks and allowed to fully discharge.

7. Leaving a battery in a laptop while using an electrical outlet for long periods of time will keep the battery in a constant state of charging up and that will reduce the life cycle of the battery.

Battery-saving sleep modes: Should I use Stand By or Hibernate

Standby mode
Use standby to save power when you will be away from the computer for a short time while working - your monitor and hard disks turn off, all applications and open files are stored in RAM. When you want to use the computer again, it comes out of standby quickly, and your desktop is restored exactly as you left it.

Hibernation Mode
Use hibernation to save power when you will be away from the computer for an extended time while working - your computer shuts down to save power but first saves everything in memory on your hard disk. When you restart the computer, your desktop is restored exactly as you left it.

When you choose Start, Turn Off Computer in Windows XP, your options are Stand By, Turn Off, and Restart. To Hibernate, place the cursor over Stand By, then hold down Shift and click.
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