I work in computer many hours per day and every time I download or create new file on desktop and then restart my PC 

I do not found files but if I download or create file and save it in any directory E,D or F and then restart I found file so what is the problem and how to stop?

You will find these terms on CPUs, desktops and notebooks. 

Though they are widely used most computer users have not yet understood the difference between these terms. 

What do you understand about dual core and core 2 duo processor and what's the difference between the two?

The most common output device is a printer. Inkjet and laser printers are most commonly used nowadays.

Compare the advantages and disadvantages of inkjet printers over laser printers.

My printer is HP Deskjet 3740 series.  

I have two ink cartridges, the black cartridge and the primary colors cartridge. When the ink is used up, I just refill the ink cartridges with the refill inks (using syringes) which can be brought from computer stores. I followed the steps in how to refill.  At first, the printing quality is really good. 

I am using XP operating system in my computer. Now I am facing a problem. No keyboard work on my computer. When I plug in my keyboard in the keyboard port, the light of keyboard flash for a second but then light is off and keyboard is not working. What is the problem. Is it a hardware problem or software? How can I solve this issue.

My mouse scroller wheel is not working appropriately. It only allows me to scroll down o a few lines and it gets stuck if I continue to scroll, scrolling the upward direction presents no problem.

How may I find out whether this is a driver/software issue or a hardware damage and what should I do?

Hi,

I want to ask you something and that is my pc is not showing any display. When I start it, starts but don't show any display.cables and monitors are fine.

When I start it, just show blank screen and also keyboard num lock button don't turn on but when i start keyboard all lights turn on for a moment then turn off and it happen always when we start our computer

My pc is operated by windows 7. Its processor is core i3. Recently I have faced a problem that it restarts automatically. After restarting it appears everything normal.  After a few hours it restarts again. Why my pc restarts automatically? How can I solve the problem?

I am using Gigabyte motherboard with dual core processor. I am getting message from bios screen that my system got over heating.

When I touched the motherboard cooler fan it was extremely hot.

Can I increase speed of my cooler fan from my system?

I am using Microsoft Windows XP Service Pack 2. When I wanted to play any high resolution game, the game become very slow. My agp is 32MB of NVidia . My question is can I share my ram to agp card? if yes then tell me the process please