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2. Why is my computer so slow? - AOL

   www.aol.com/products/blog/why-is-my-computer-so-slow

   For an easier fix, ... Computer Hardware issues. ... Faulty Hardware Components: Any malfunctioning hardware component, such as a faulty motherboard, power supply unit ...

3. Firmware - Wikipedia

   en.wikipedia.org/wiki/Firmware

   ROM BIOS firmware on a Baby AT motherboard. In some respects, the various firmware components are as important as the operating system in a working computer. However, unlike most modern operating systems, firmware rarely has a well-evolved automatic mechanism of updating itself to fix any functionality issues detected after shipping the unit.

4. Computer maintenance - Wikipedia

   en.wikipedia.org/wiki/Computer_maintenance

   Computer maintenance is the practice of keeping computers in a good state of repair. A computer containing accumulated dust and debris may not run properly. A computer containing accumulated dust and debris may not run properly.

5. Troubleshooting - Wikipedia

   en.wikipedia.org/wiki/Troubleshooting

   Troubleshooting is a form of problem solving, often applied to repair failed products or processes on a machine or a system.It is a logical, systematic search for the source of a problem in order to solve it, and make the product or process operational again.

6. Power-on self-test - Wikipedia

   en.wikipedia.org/wiki/Power-on_self-test

   BIOS POST card for ISA bus BIOS POST card for PCI bus Professional BIOS POST card for PCI bus Two POST seven-segment displays integrated on a computer motherboard. The original IBM BIOS made POST diagnostic information available by outputting a number to I/O port 0x80 (a screen display was not possible with some failure modes). Both progress ...

7. Brick (electronics) - Wikipedia

   en.wikipedia.org/wiki/Brick_(electronics)

   However, additional tools or connections may be needed, such as low-level programming devices. Hardware hard brick recoveries are also considered difficult and require electrical knowledge to find and fix hardware issues. For example, an overloaded capacitor in a circuit may explode, thus stopping the flow of electricity and bricking the device.