Hardware Fault (Jack Headphone Socket)

This is a hardware fault because there is no sound coming out of any speakers of head phones this is because inside the slot there are little groves and once they touch the pins push down and transmit audio waves and after a lot of unplugging and plugging in the pins inside the stot get weaker and eventually will stop touching the jack

To fix this problem simply buy a new sound card for the computer and make sure that hard ware is compatible with your computer

Hardware & Software Faults (Blue Screen Of Death)

This is a hardware and software fault because your computer is stopping its self from getting damaged this is not very common any more but does still appear the causes of the blue screen of death could be a RAM problem or corrupt, missing or damaged .dll file and many more  

To fix this problem simply look for a KB Error code or look of the file which cause the fault in my case it was cause by SPCMDCON.SYS and this is a malicious program which generates fake warnings telling you that your computer is infected with viruses when it is not

 

I would recommend wiping the hard drive clean and reinstall the operating system which would be a lot faster and easier

Hardware & Human Fault (Dust)

This is a hardware and human fault because when you turn on a computer it sucks in all of the air and the dust around the tower and when the dust starts to build up inside the tower the computer is straining its self to keep it components cool enough so it does not overheat and it could cause damage to the components like the CPU which is the brain of the computer

This can be prevented by having your computer booked in at a technicians shop for a servicing or a clean inside the computer tower

Hardware & Human Faults (Laptop Battery)

This hardware fault because when the client turns on the computer it will boot up and after about 5 minutes it just turns off but when the power cable is plugged in is fine. This means that the laptops battery is not holding charge this can be caused by overcharging the battery

To fix this fault simply take out the battery and find the model number in something like eBay but make sure its brand new before you buy the product or go through the computers manufacture for example HP, SONY,DELL etc.

Human Faults (CD/DVD Drive)

This is a human fault because someone has flicked the band off the clog or either when people push the tray back in it makes the band slip and could cause it to come out of place. This is very common for business, schools and colleges to get the fault

To fix this fault simply open up the CD or DVD drive and put the band on the clog which it came off and then it should work

Hardware Fault (Mouse)

This is a hardware fault because the souse has stopped responding with the computer but the blue light is still on a the top mouse so the mouse has not gone to sleep mode but the red laser is not on so probably the laser inside the mouse has broken

To fix the fault simply replace the mouse with a working one and test the broken one in the other computer and it did not work so the laser has broken