You can't you can only do that on PC's
The minimums are based on what you are. If you are a student 1GB RAM and 160GB Harddisk is the basic requirements. If you are a gaming person or a professional who wants fast computer then 2GB RAM and 250GB Harddisk is enough.
Yes. You can connect a laptop harddisk (2.5" form factor) to a desktop. Easiest option is to use a 2.5" external harddisk enclosure and connect it to desktop using a USB port. You need to check if the HDD is Serial or Parallel ATA and you can get a corresponding enclosure. - Neeraj Sharma
hard-disk
If your laptop battery fails or no longer holds a sufficient charge, you can easily replace it. But as long as it is working fine then you don't need to replace it.
no you can not
A (harddisk) is a hard drive that stores and provides quick access to large amounts of data.
You should go to a expert for that. I strongly do not recommend taking apart your laptop
i agree
Restart or replace it
Some laptop microphones have internal errors with them, so you should replace them. You can replace them at BestBuy or any other electronic store for a lesser price.
Not enough info. Which model?
Replace the backlight...