My computer has recently begun running slower and when I sign on to a website, many times the computer will give me the message that the site is not available, but when I press F5 it works. 

Is this because I have used too much memory on my computer? 

What is the optimal amount of memory that I should have available on a laptop computer? 

I was debating whether or not to purchase a memory card or trying to free up some memory, but am not sure if this would help.

I cannot open local disk d. It says do you want to format it now?

Is it really a must to format it now?

Can I recover all my files after reformatting?

What will happen after reformatting?

Few days back, i have updated my windows OS from Windows 2003 to Windows XP.  When i tried to install the other softwares and hardwares using my USB port, am not able to install the packages.  Because  my memory stick is not detected my Windows XP.  When i Windows 2003 back to my PC and tried with USB port.  It was working.  Does anyone face same kind of issues?

This diagram describes the fetch-execution cycle. How can i perform another step for multiplication just after the step 4 and what value will be loaded in Program counter, AC and IR?

Due to slower speed of my computer, I have been told to extend the RAM. So, I have purchased a new 512-MB RAM, but when I installed it, it showed only an increase of 16 MB. How is it possible? When it is installed on another system it show complete 512 MB but why 16 MB in my computer.

Hi all, I got a problem with RAM. I recently upgraded my RAM, I added 2GB to the existing 2GB. That makes it 4Gb or 4096MB,

but  Windows XP shows 3GB of  RAM in the properties.The memory is shared with graphics memory, but my graphics memory

is 128MB.Where is the rest of the RAM? 

I want to increase my RAM memory. I have RAMs of two different categories. One is an SDR and the other is a DDR SDRAM. Can I use both on the motherboard of DELL GX280 chip type:INTEL(R)82915G/GV/910GL Express Chipset Family. Or I have to buy the other one of the same type.

DDR RAM

I was advised by a technician that I need to upgrade the RAM on my desktop. Can you please give me some tips on which kind of RAM is compatible with my CPU?

When I go to the store where I would buy the RAM, what specifications of my CPU would I need to tell them so they can tell me the kind of RAM that I need to buy for my CPU?

I am planning to upgrade the RAM of my computer and there is a lot of brands that I could choose from. Any expert advice on which brand of RAM should I get would be much appreciated. I am looking for the highest quality RAM.

What is the difference between physical memory and available memory?