The PC writes chunks of data to the memory stick and if at the same time it's removed, the data is lost and the memory stick may get corrupted. However to bypass this, you can always set it for fast removal.
The computer is pulling from the hard drive information and is putting into RAM by using software that is burned into the ROM.
Without virtual memory some computer programs wont be able to run. As the memory increases the computer may slow down its processes.
what is the role of BIOS? why is it important for it to keep its memory after the computer is switched off?
There is much research that must be done before one buys computer memory. One must decide how much money they are willing to spend and research reputable computer memory brands.
Pulling a fuse wouldn't do it - you'd have to get the ECM reflashed.
You added memory that is incompatible with your computer. Return it and buy a differentbrand. you should find out if the ram is compatible before you buy it
PROGRAM
I'm guessing RAM Random access memory
No. Your programs and your data in the computer are stored on the hard drive (with very few exceptions). RAM memory is the 'working' memory of the machine, it is volatile memory that is erased when the power is turned off, so removing or replacing RAM will not delete anything from your hard drive. That said, you should always have a current backup of your important data and programs before you undertake any repairs or upgrades to your computer.
I think all parts are important, because they are all there for a purpose. However if you are asking the most important parts, they are the CPU, memory and disk.
It is important to have large storage and memory for various reasons. This will determine the performance of your computer in terms of the data it can process and be able to store.
INPUT; OUTPUT; DATA ORGANISATION; ADDRESS ORGANISATION; ADDING; SUBTRACTING; MEMORY. I try to think of such problems by what I would list as important if I was going to design a computer without ever have seen one before. The INPUT and OUTPUT are the human interface. I don't differentiate any of the variants such as static memory and dynamic memory.