I'm having the same problem I might quit laptop gaming and go fully mobile. I'm saving up for a PC too. Build one song buy one. Buying one is rly rly expensive. Building ones wat cheaper. Also gotta buy a monitor.
only 400? Nah save yp for a year and do jobs and save till you have 1000$ then buy all the parts you need for the pc. Then with the left over money from the 1000 buy a monitor and keyboard. And anything else u need. Good luck
