External storage devices like flash drives or hard drives are so convenient for carrying data between computers. Just plug and play, as they say. But did you know it's not the same for when you unplug your drives? Here's how to safely remove external drives from your Windows computer.

Recently I was at a customer's location repairing her computer and needed some files from one of my USB flash drives. When I was done, I went through the process of ejecting the USB drive from her computer. She was surprised that I didn't just pull the flash drive out. You can, most of the time, unplug a USB device like a mouse or printer without having to do anything to your Windows-based computer. It's only when you have a storage device, like a flash drive or external hard drive, that you have to take an extra step to remove the device safely.

What is write caching?

By default, Windows enables write caching on storage devices for better performance, whether internal or external. Write caching allows programs to write to the device and continue without waiting for the data to be written. By properly ejecting a storage device, you ensure that the cache is getting written to the device before you disconnect it.

How to safely remove external drives

1. Left-click on the Safely Remove Hardware icon on the Taskbar.
   
2. Left-click on the device you want to disconnect.
   

or

1. Open File Explorer (Windows logo key + E).
2. Under This PC / Computer, right-click the drive you want to disconnect and select Eject.

Windows will display a notification when it's safe to disconnect the drive.

Everyone wants their computer to last forever. But the reality is the average life span of a computer is 3-5 years. Allot of times, you can get a computer to run for over a decade with common sense and regular maintenance. Here's how to keep your computer running longer.

Keep your computer clean

As the saying goes, "A clean computer is a happy computer," and it's true. A dust-free system will run cooler and have less chance of creating a short circuit (dust is a conductor of electricity). Visually inspecting your computer every month or so and cleaning as needed can extend its life. If a fan fails to cool, the extra heat could damage the hardware.

A while back, I wrote an article on cleaning the dust out of your computer that covered essential removal from desktops. The same holds for laptops too. But there are just a couple of areas on a laptop that you have to pay attention to, the air vents. Since the cooling vents usually are on the bottom, they can and will draw in lint, fuzz, pet hair, and other debris. If they get clogged up, your laptop could overheat and damage the system.

How to clean a laptop CPU fan

In the article 'How to clean the dust out of your computer', I talk about using non-metallic rods (plastic, wood) to hold the various fans in-place while cleaning them with compressed air. Since the vents on laptops are smaller than desktops, you will need to use a thinner rod to hold the CPU fan in-place. I usually use a toothpick, but if the vents' holes are tiny, I have to use an unfolded paper clip. Remember to blow compressed air in both the inlet and outlet vents.

Stay away from static electricity

The placement of your computer will affect its life span. I always recommend placing a desktop computer at least 18" off the floor to prevent static electricity issues. I have had problems with static electricity in my house. The dry climate in Arizona and wool carpet does create a lot of static electricity. To resolve the static electricity issue, I have a spray bottle full of tap water. Whenever I feel the static building up on the carpet, I spray a light mist of water on the carpet's high-traffic areas, and the static dissipates.

Liquids and computers don't mix

The last item on my list seems like a no-brainer, but it does bear repeating, liquids, and computers don't mix. Your cup of coffee or soda should never be placed on the same surface as your computer. If you need to have your computer on top of your desk, then elevate it above the desktop. With a laptop, you can use a stand or riser; with a desktop, you can use a stand, a couple of 2x4's cut to size, or even an 8x16x4 CMU block. That way, even if you do spill some liquid, it won't be able to get into your computer.

Note: the Windows 10 Technical Preview program expired on 4/15/15 and is no longer available.

Coming on the heels of the Windows 8.1 Update, Microsoft recently released the Windows 10 Technical Preview. With this new Windows version, Microsoft combines elements from Windows 7 and Windows 8.1 to enhance the keyboard/mouse user experience better. Let's take a look at what's new in the Windows 10 Technical Preview.

The Start menu returns in the Windows 10 Technical Preview

With this Windows version, we see a shift in the focus from touch-based devices to keyboard/mouse systems. The most significant change by far is the return of the Start menu. And it is a hybrid now, with elements from Windows 7 (Start menu (left-side)) and Windows 8.1 (Start screen Tiles (right-side)). But if you like using the Start screen, it's still there too. It's just a checkbox and a restart away.

You can switch in between the Start menu and the Start screen in the Windows 10 Technical Preview

But let's be honest, the Start screen concept might work on a tablet or phone, but it fails miserably on a laptop or desktop computer without a touch screen. Customers have even told me that they had returned brand new Windows 8 systems because they could not stand the Start screen.

Using multiple instances of the Desktop with Task view inside the Windows 10 Technical Preview

Along with the Start menu's return, Microsoft has also built-in the ability to run multiple instances of the Desktop called Task view. With Task view, you can have different sets of programs running in separate desktops. This feature is kind of cool if you're using a single display.

The Windows RT / Metro apps from Windows 8 / 8.1 also have undergone some changes. Their name has been changed to Universal apps, and they now run in completely re-sizable windows. You need to use the Store to install universal apps and can sync them across multiple devices using a Microsoft account.

There is a small change here and there too. One difference is with the way you copy and paste with the Command Prompt. You can now use the Windows keyboard shortcuts (Ctrl + C for copy, Ctrl + V for paste) for these tasks.

The Windows 10 Technical Preview is available for anyone who wants to give it a try. Remember; do not install the Windows 10 Technical Preview on a production system. Use only a system that can be reformatted after the preview expires (4/15/15). For this article, I used an Oracle VirtualBox virtual machine.

Doing computer repair, I see a lot of different issues. But there is one problem I see over and over again, start-up corruption. This most commonly occurs when the computer is not turned off properly. And laptops appear to be more prone to this issue than desktops. So here's how to properly shut down your Windows-based computer.

Logic dictates that if you use a button to turn on a device, you should also use it to turn it off (button on / button off). You use a button to turn your TV, audio/video components, and smartphone on and off. But this is only sometimes the case when it comes to your computer. It is always recommended that you allow the operating system to close down all applications and turn the computer off itself.

Using the Start menu / Start screen to shut down Windows

This may seem like a no-brainer, but you would be amazed at how many people don't use this method. It's mainly laptop users who instinctively close the lid or reach for the power button. But if you don't watch how long you hold the power button down, you could perform a hard shutdown. It's simpler and recommended to use the shut down button on the Start menu / Start screen.

Windows Vista

Start button > Power button > Shut down

Windows 7

Start button > Shut down

Windows 8

1. Start screen > Sign out

2. Sign in screen > Power button > Shut down

Windows 8.1

Start screen > Power button > Shut down

Or

Power users menu (Windows logo key + X) > Shut down or sign out > Shut down

Windows 10

Start button > Power button > Shut down

Or

Power users menu (Windows logo key + X) > Shut down or sign out > Shut down

Windows 11

Start button > Power button > Shut down

Or

Power users menu (Windows logo key + X) > Shut down or sign out > Shut down

Using the power button on the computer to shut down Windows

This method is acceptable for turning off your computer, as it performs the same command as the shut down button on the Start menu / Start screen. But you have to check and ensure that the power options inside the operating system are configured to shut down the system when the power button is pressed.

Power button options inside of Windows 8.1 / Windows 10

The power button can be configured to put the system into sleep or hibernate. And if your system loses power while it's asleep, you will get an error when you restart it. This happens quite often with laptops when they are not using the ac adapter and the battery runs out.

Using the power button on the computer to force it to shut down

How do you turn off your computer when it freezes and has no reset button? This is where the Advanced Configuration and Power Interface (ACPI) specification comes into play. This spec has been built into every computer for well over a decade now. It mandates that when the power button is held down for 10 seconds or longer, the system performs a hard shutdown, turning off power to all components. This will most likely cause an error upon restart.

Your computer has two types of memory, Random Access Memory (RAM) and Virtual Memory. All programs use RAM, but when there isn't enough RAM for the program you're trying to run, Windows temporarily moves information that would usually be stored in RAM to a file on your hard disk called a Paging File. The amount of data temporarily stored in a paging file is also referred to as virtual memory. Using virtual memory, in other words, moving information to and from the paging file, frees up enough RAM for programs to run correctly.

The more RAM your computer has, the faster your programs will generally run. If a lack of RAM is slowing your computer, you might be tempted to increase virtual memory to compensate. However, your computer can read data from RAM much more quickly than from a hard disk, so adding RAM is a better solution.

If you receive error messages that warn of low virtual memory, you need to either add more RAM or increase your paging file size to run the program on your computer. Windows usually manages this automatically, but you can manually change the virtual memory size if the default size isn't large enough for your needs.

There is a formula for calculating the correct pagefile size. The Minimum pagefile size is one and a half (1.5) x the amount of memory. The Maximum pagefile size is three (3) x the minimum pagefile size. Let's say you have 2 Gb (2,048 Mb) of memory. The minimum pagefile size would be 1.5 x 2,048 = 3,072 Mb and the maximum pagefile size would be 3 x 3,072 = 9,216 Mb.

How to change the pagefile size in Windows 8

1. Open the System Properties, press the Windows logo key + Pause, or use the Power User menu (Windows logo key + X) and select System.
   
2. If you are going to use the formula above to configure your pagefile, note the amount of installed memory under the System category.
   
3. In the left pane, click Advanced system settings. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
4. On the Advanced tab under Performance, click Settings.
   
5. Click the Advanced tab and then under Virtual memory, click Change.
   
6. Clear the Automatically manage paging file size for all drives checkbox.
   
7. Under Drive [Volume Label], click the drive that contains the paging file you want to change.
8. Click Custom size, type a new size in megabytes in the Initial size (MB) and Maximum size (MB) box, click Set, and then click OK.

Note: Increases in size usually don't require a restart for the changes to take effect, but if you decrease the size, you'll need to restart your computer. It is recommended that you don't disable or delete the paging file.