Resposta para "Screen turn translucent blue (like I was highlighting in word)"Yes, first you should check the cable connecting the motherboard and the monitor. Just google Your Laptop Model Name + Disassembly If unluckily it's not the cable, you may need to buy a new monitor.
Resposta para "Why does my asus laptop keep disconnecting from the internet?"In software aspect, there is only a few things you could do, like what @kristenp mentioned. If you find out the wireless card not working, I strongly recommend you buy a refurbished wireless card on eBay.