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The core storage drive of a computer may come in the form of an traditional hard disk with moving parts or a stationary solid-state drive. Solid-state drives (SSDs) are faster and use less power than hard disks. They're also less prone to freezing when running multiple programs at once. Bottom line: if you're a multi-tasker, go for the SSD. If you can't decide between a hard disk and a solid-state drive, you could choose a hybrid drive which combines the two. With a hybrid you get the speed of an SSD for a lower cost. On the other hand, its hard-disk parts are fragile and can be damaged if you drop your computer. Optical drives, which play CDs and DVDs, are becoming less common on laptops. If you can't find a computer with a built-in drive, buy an external drive that you can attach with a USB cable. The larger your computer's hard drive, the more information you can store on it. Hard drives usually come in sizes of 500 gigabytes (GB) to 8 terabytes (TB). Consider your intended tasks on the computer. Ask yourself if these needs could change over the next few years. For example, your immediate need might be enough space to hold word documents and spreadsheets. However, you could find music and video files that you'd like to store for later. Your friends could begin sending pictures of the kids' latest milestones. These files will require more space than smaller files. The more random access memory (RAM) memory your computer has, the more applications it can run simultaneously and the better it performs overall. If you plan to stick with basic usage, go with a standard 4GB RAM. If you're a serious gamer, on the other hand, go with 16GB or higher. You can also buy additional RAM later if you need it. RAM tends to be rather inexpensive, regardless of the system you're using. Look at the both the number of cores and the number of gigahertz (GHz). Cores determine how fast your computer runs. GHz measure the amount of power consumed. For example, a 1.5 GHz quad core processor runs faster than a 2.0 GHz single-core. Your requirements will likely fall into one of four categories. With each one, you have a range of processors to choose from: Basic usage (web surfing, emailing documents, productivity tasks): Intel Celeron, Pentium, AMD A4, or AMD A6. Basic gaming (single-player applications): Intel Core i3, AMD A6, AMD A8. Watching videos and basic gaming: Intel Core i5, AMD A8, AMD A9, or AMD A10. Video editing and serious gaming (multi-player interactive games played online): Intel Core i7, AMD A10, or AMD A12. For most computers, you'll have to decide between Windows and Mac. Windows systems are less expensive, more common, and can interface with the Xbox. However, they're more vulnerable to malware like viruses and ransomware. Mac operating systems are less vulnerable to cyber attacks and usually update automatically with a high-speed Internet connection. Tech support at the Genius Bar in any Apple Store is free indefinitely. It's free via phone only for the first 90 days. If you're buying a laptop, remember that the more power your computer consumes, the shorter its battery will last. New Mac batteries can last for up to six hours if you're only creating documents. Surfing the web and watching videos can reduce battery life to about two hours. Windows batteries have a shorter life before you need to charge them. Dimming your display will extend battery life by anywhere from a few minutes to an hour. Newer models of Macbooks, Ultrabooks, and tablets don't have removable batteries. On the other hand, you can remove the batteries in older Macs. With care, these batteries can last for five years before you need a replacement.

summary: Choose your drive. Determine how much storage space you'll need. Figure out how much memory you'll need. Determine your required processor speed. Choose your operating system (OS). Consider battery life.

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Check various locations that have faucets. The kitchen, the bathroom, basement and outdoor faucets, and hose hookups are common areas where fixture specific low water pressure can occur. Run water in all faucets and showers in your home to identify if there is are one or multiple problem problem areas or to determine that all locations have low water pressure. Run both hot and cold water through all faucets. If your water pressure is low only with hot water, the issue is likely your water heater. Your problem might only affect one or two locations. In this case, the source of the low water pressure is likely a clogged faucet or aerator. Remove the end of the faucet. Examine your aerator. Check to make sure there are no debris or buildup. If the aerator needs to be cleaned, soak it in a water-vinegar solution. If that doesn't work, buy a replacement. These are very inexpensive. Aerators are sold with different rates of water flow, so you can also try buying one with a higher rate of flow. Turn the water on before you replace the aerator. If the water flow is not restored to normal, the source of low water pressure is likely not the specific faucet but an overall problem. If you can't pinpoint the cause of your low water pressure to just one or two faucets in the house, its probably an overall problem. Check the PRV and water shut off valves in your home. This is often the cause of low water pressure. Look for water leaks. A leaking toilet or water main can cause low water pressure. Check your water heater. If you only have low water pressure when you are running hot water, it is likely due to your hot water shut-off valve on your water heater.
summary: Determine if all locations within your home or office have low water pressure. Check the faucet if you only have low water pressure in a particular location. Look for other sources of low water pressure.