USB 1.0 is the original iteration, which was frequently referred to as simply “USB”. The USB 1.0 technology was developed by seven companies: Nortel, DEC, Compaq, IBM, Intel, Microsoft, and NEC. It was first introduced in 1996, and was devised as a way to standardize a protocol for connecting multiple devices, getting rid of the need for multiple types of connectors and also allowing more bandwidth for devices, as USB cables were able to transfer up to 12 Mbps, which was much faster than any previous protocols. This made it a feasible way to connect hard disk drives and other devices that required high data transfer speeds to operate correctly.

USB 2.0 was released in 2000 as an improvement to the USB specification. It boasted speeds of up to 480 Mbps, which was a huge improvement over the original speeds of USB 1.0. USB 2.0 became very popular and is still the most popular connection type for peripherals in use today as of this writing. Most computers and laptops include at least two USB 2.0 ports, and some include even more, owing to the increasing need for more ports to connect users’ devices.

USB 3.0 was announced in November of 2008, and is yet another improvement on the original protocol. USB 3.0 products are only recently coming to the market, but it looks to be a big improvement in speed, as it can theoretically reach speeds up to 4 Gbps, which is faster than the limitation of most hard drives.

While USB has been around for many years, its continued improvement and refinement means it will likely be around for many more. The promise of very fast transfer rates for USB 3.0 mean that it could replace virtually every connection on a computer or laptop.

When the inverter in a laptop goes bad, this can cause multiple problems with your machine. It can cause your screen to flicker on and off, become too faint to read, or even cause a faint buzzing noise. To test whether your inverter in your laptop has in fact gone bad, you will need to do one of two things: either replace the inverter board with one you know to be functional, or connect a backlight lamp you know to be functional. If the inverter board works or if the god backlight does not work, you know your original inverter board has gone bad. In most cases testing a good backlight will be easier, as most backlights are universal and will work as long as the connectors match those on your inverter board. To access either of these components, remove your screen bezel in accordance with your manufacturer’s instructions. Once removed, you will see the inverter board beneath your screen. The left side connects to the LCD cable, while the right connects to your backlight. Be sure when installing or removing any components of your machine that you have removed the AC adapter and battery from your machine to prevent shortage or electric shock.

Additionally, if you have a multi-meter you can attach it to the inverter cable connection on the motherboard itself to check that your inverter is receiving power. If you don’t, switching the inverter board or backlight will yield similar results. In some cases, your laptop will have a lid closed switch. If your model does have one, check to make sure that it is not sticking by tapping it repeatedly. If this changes the display of your monitor, your inverter may be fine; however that switch may be cutting off power to your display.

Laptop inverters are specific to each machine and not interchangeable. To replace your inverter, you will need to find the specific part number, which can usually be found in your user manual, or by contacting the manufacturer. For some companies, you can look up the information for your machine and its individual parts online as well. Inverters are generally easy to find at any laptop parts retailer.

Once all screws have been removed, the laptop’s hard drive should be able to slide out. The hard drive bay is marked with an engraved symbol, and is attached to the HP laptop motherboard. The next step to replacing Toshiba laptop motherboards, is to turn the computer back over, and open the screen’s lid. With a flat-head screwdriver, pry underneath the large plastic section, located above the keyboard. It is the housing for the indicator lights and power button. After removing the plastic housing, disconnect the cable connecting it to the HP laptop motherboard. Also remove the keyboard from the case, and disconnect the ribbon cable. Unscrew the screen hinges from the case, pull them out, and set them aside.

Locate the network card, and disconnect it from the port on the Toshiba laptop motherboard. Remove the screws holding the graphics card. Disconnect the card from the motherboard and set it aside. Then, remove the screws for the fan and heat sink unit on the laptop’s processor. Remove the unit and processor from the HP laptop motherboard, and with a screwdriver, take out the screws along its edges. Finally, lift the damaged motherboard out of the casing, and place it aside. Insert the one of the compatible motherboards for HP laptops into the casing, and reassemble the internal parts that were previously removed. It is highly recommended to take a photograph of the Toshiba laptop motherboard’s unit throughout the repair procedure, to utilize during the rebuilding process.