Problem: Article: . If you're replacing a laptop's hard drive, you'll want to back up the information that's on the hard drive so that you can restore it onto the new hard drive later. Before you purchase a new hard drive for your laptop, check the user's manual or open your laptop to make sure you can replace or install a second hard drive. The majority of laptops do not have an expansion slot to install a second hard drive. On some newer laptops, the hard drive may be soldered in place and/or not replaceable. Most modern computers and laptops use SATA drives. Search for a hard drive that works with your model of computer, then purchase your preferred option. Most laptops use a 2.7 inch (6.9cm) SATA drives. Some newer laptops use M.2 SSDs, which are much smaller and faster than SATA drives. M.2 SSDs come in a variety of sizes. This size of the drive is coded using a 4 digit number. For example, a 2280 M.2 drive is 22x80 mm, and a 2260 M.2 device is 22x60 mm. In order to install an M.2 SSD, you'll need to see if your motherboard has an M.2 connector slot, and what size SSD the motherboard supports. 2280 is the most common size for desktop computers. You'll also need to check if the M.2 connector slot on your has an M or B key slot. An M.2 SSD with an M key slot will not fit in a B key connector. Check the manual for your motherboard and make sure the M.2 SSD you purchase is compatible with your motherboard. Solid State Drive (SSD) vs. Hard Disk Drive (HDD): Hard Disk Drives are mechanical disk drives. They are usually slower, but less expensive. Solid State Drives have no moving parts. They are much faster, quieter, and more expensive. You can also purchase a hybrid HDD/SSD drive. Disconnect your laptop from its charger, then press and hold the Power button until the laptop turns off. You can also use the laptop's Power settings to turn it off: Windows - Click the Windows Start menu, click the power icon, and click Shut down. Mac - Click the Apple icon in the menu bar, click Shut Down..., and click Shut Down when prompted. Shut your laptop's lid, then flip it over so that the bottom of the laptop is facing up. This will vary from laptop to laptop, but you'll usually need a screwdriver to remove the case. Use a plastic pry tool to carefully go around the edges of where the bottom panel is attached to the keyboard and carefully pry it loose. Many laptops require special screwdrivers, such as Pentalobe models, or tri-wing screwdriver, to unlock the case. Some laptops, such as Mac laptops, will require you to unscrew several screws around the border of the case. Be careful of any ribbons or cables attached to the motherboard from the bottom panel. If you find any cables or ribbons attached, make a note of where they are attached, and carefully remove them. . This will prevent you from accidentally harming your computer's delicate internals with static electricity. You can ground yourself by touching something metal or by purchasing static wrist bands that you wear while you work on your computer. Most laptops will allow you to remove the battery, which will prevent you from inadvertently shocking yourself during the hard drive installation. On some laptops, the hard drive may be housed inside a special panel. The panel can usually be identified by the hard drive logo printed next to it. You will usually need a small Phillip's head screwdriver in order to remove the screws and the panel. Depending on the laptop, the hard drive may be secured in place with screws. Remove all screws holding the laptop in place. Slide it out from the connection port that it is attached to. There may be a release latch or ribbon you pull to disconnect the hard drive. The hard drive will pop back about half an inch, allowing you to remove it from its housing. You may also need to disconnect your hard drive from a wire or cable. It's best to place your old hard drive somewhere safe in case you need to retrieve data off of it. Some computers use a special enclosure to secure the hard drive. If your hard drive has an enclosure for the hard drive, remove all the screws and pull the old hard drive out. Place the new hard drive in the same enclosure and secure it with the screws. Ensure that you insert it with the correct side facing out, then press it firmly into the connectors. Do not force the hard drive, or you may damage the connectors. If you had to remove screws to remove the original hard drive, screw them back in as well. To install an M.2 SSD, insert the SSD in the M.2 slot at a 30-degree angle and then press down on the other end of the SSD. Use a screw to secure the SSD to the motherboard. If you had to detach any wires or cables from the original hard drive, reattach them to the new hard drive. Replace the bottom of the case and any screws holding it in place. If you needed to disconnect any ribbons or cables to remove the bottom panel, be sure to reconnect them before closing the laptop. . Empty hard drives require an operating system to be installed on them before you can use your computer again.
Summary: Back up your laptop's information Make sure you can add or replace the hard drive in your laptop. Buy a hard drive that matches your model of laptop. Turn off your laptop. Turn over your laptop. Remove the bottom of the laptop. Ground yourself Remove the battery if possible. Open the hard disk panel (if present). Unscrew the hard drive. Remove the existing hard drive if necessary. Transfer hard drive enclosure to the new hard drive (if present). Insert your new hard drive. Connect any wires that you unplugged. Close back up your laptop. Install an operating system

Problem: Article: Betta fish are only hardy to a particular water type, such as a certain water hardness and pH. It takes them a while to acclimate to a new environment and this process is stressful for the betta. Allow your betta to fully acclimate before making any changes to their new home. In order to test water parameters each week, you will need a master freshwater test kit. This will allow you to monitor your aquarium and take readings. Follow the instructions for testing provided by the manufacturer. Place notes in your calendar or diary to remind yourself that it's time to test and change the water.
Summary: Ensure your betta is properly acclimated. Test the water weekly.

Problem: Article: Mexican citizens must have a TN visa to enter the US and therefore, must apply at a US Consulate or Embassy abroad. It is recommended that Mexican citizens apply in Mexico since officers in those consulates are more aware of the TN visa regulations and procedures. Appointments can be made online through the department of state website or by phone. To be issued an appointment, complete and submit Form DS-160 online. The application fee is $190 and can be paid online.
Summary:
Make an appointment with a US Consulate or Embassy. Pay the application fee and complete the application form.