How much can I mine with my PC?

For most people, not much. Your earnings depend largely on how good your GPU is. My work computer generates about $0.31 per day in Bitcoins, but if you have a gaming PC with multiple high-end GPUs, you could make $1.50 to $5 per day or more .

Taking into account an electricity charge of $0.10 per kWh of electricity, you can expect to see approximately $11.50 per day . Add in the cost of running the mining PC as a whole and this will drop to about $11. This will turn into $77 per week, $334 per month, and $4,004 per year.

GPU mining kinda took a turn for the worse earlier this year and the powerful GPUs make it unprofitable . If your laptop has a GTX 1080, then you’re looking at $5 a month, approximately. To me, the noise and heat isn’t worth the hassle for 5 whole dollars.

Yes, via overheating of your GPU and CPU and overloading of your power supply . Do NOT try mining on a laptop – almost guarenteed to kill it very quickly as laptops are NOT designed for high-load continuous usage (using a laptop to control a USB-interface miner is OK as that doesn’t put significant load on the laptop).