Computer is consisting of two parts software and hardware. All the assembly language and programming are the software part. And hardware part consists of CPU, monitor, key board, mouse etc. Normally there may not arise any problem when you use a computer. But after a long use some hardware problem may arise. Hardware problem sometimes may fall you in big problem if you don’t take immediate necessary steps. Hardware problems mainly are power supply problem, crash of hard disk, damage of RAM, of physical damage of any parts or electronic part damage (such as ICs). When a hardware problem arises, first you should contact the hardware supportline. From the support line you will get the information what you should do immediately. Then you should send the computer to the service center. The experts in the service center may suggest you what you should do in next. If any part damages you have to buy and replace that part. But I hope it will not affect your computer performance. You can use your computer after servicing. But remember one thing you should choose the correct servicing center.