4] Check the Power Supply cable connection
Make sure the power cable connected to the motherboard is securely plugged in. A poor cable connection can result in unstable or intermittent electrical power. This can cause the device to shut down unexpectedly or restart randomly, which can corrupt data or lead to loss of unsaved work.
Weak power cord connections can lead to high resistance, which means more heat is generated. This can increase the risk of sparks or even fires if the conditions are not handled properly.
5] Clean dust
You can use compressed air (blower) to clean the fans inside your CPU and computer case. Gently blow air into vents, fans, coolers, and other areas where dust is present.
Make sure you do this carefully and avoid spraying the air too close or too forcefully, as it can damage components. And also make sure to carefully clean the dust accumulated on the cooling fins of the CPU heatsink.
Use a soft brush or cotton swab moistened with a small amount of isopropyl alcohol to gently clean the fan and propeller. Make sure the fan is completely dry before reinstalling it.
Remove dust from the power supply by blowing it using air from the back of the case and from inside the case. Clean all holes through which air escapes on the case. The things on the front collected a lot of dust. You need to do this every three month.
6] HDD not working
If your hard drive isn’t working properly, start by making sure the data cable is securely connected to the drive and system board, as well as to the power cable. If the cable seems too loose to connect to the motherboard or device, replace it with a new, tightly attached cable.
7] Check nuts and bolts
Be sure to tighten the nut on the back of your card. Use a small nut driver to tighten it, but be careful not to tighten it too tightly. If one of the nuts is absent, install a new nut in place. Use your finger to keep the bolt in place on the inside of the card while tightening the very loose nut.
Check for loose screws or nuts on the bottom of the case. Sometimes, if you hear something but can’t see it, you may need to tilt or flip the object to let it go. This is especially important if you notice nuts on the back of the card or ports are missing.
8] Check the CPU Fan
If your computer’s CPU fan makes a loud noise, try buying a new fan. To find out if the component is causing the loud noise while the system is running, try stopping the fan with your finger to see if the sound stops. Make sure the fan is spinning quickly.
If there is a problem, you can usually remove the CPU fan, remove the label on the bottom, put some light oil on the pad, and then put the label back on. If you accidentally spill oil on the label, wipe the fan and replace the label to protect it from dust.
Some people believe that using a small amount of viscous motor oil for cars is the best option. Use what you currently have because it is only temporary.