What are differences between Laptop and desktop from hardware side ?

The obvious one would Laptop are essentially non-upgrade-able, the costs of repairs are more extensive as you cannot simply replace components on integrated CB and uses less powerful components due to heat  dispersal (if you need processing power).   PC's can be custom built, or purchased. Components can be replaced, though not mobile as Laptop. PC requires all external peripherals as opposed to laptop.

Laptop up grade is not available and destop computer is upgrade and all external and upgrades.

The size is the most noticeable difference between a laptop and desktop computer. A laptop is a single machine with the hard drive, disk drive, monitor, wireless modem, keyboard and mouse contained within it, and it easily folds to be stored in a carrying case.

computer with the pros and have smaller keyboards and don't feature a number pad on the right side.

a desktop computer is much easier since most of the hardware can be easily...  

Laptop and desktop between difference .A laptop is a signal machine with a hard drive.

Desktop is not signal machine .Between very difference .

THE SIZE IS THE MOST NOTICEABLE DIFFERENCE BETWEEN A LAPTOP AND DESKTOP COMPUTER. A LAPTOP IS A SINGLE MACHINE WITH THE HARD DRIVE, DISK DRIVE, MONITOR, WIRELESS MODEM, KEYBOARD AND MOUSE CONTAINED WITHIN IT, AND IT EASILY FOLDS TO BE STORED IN A CARRYING CASE.

LAPTOP is a mini computer use any very but desktop is use only any a place. desktop  speedily and easily use 

The main difference is Laptop we can carry every where

laptop is a mobile machine or it is movable while desktop is static or non mobile machine 

f you don't have budget  try to minimize your software and clean unnecessary program or software. install ccleaner for registry and check and clean your %appdata% and %temp% 

PC's can be custom built, or purchased. Components can be replaced, though not mobile as Laptop. PC requires all external peripherals as opposed to laptop.