Use these to help keep wires flush to the case - it will make it easier to put the side panel back on later. Some cases will have little metal loops for your cable ties. You may already have some cable ties in your motherboard box, but if not, a couple of velcro or wire ones should do the trick. I wouldn't recommend using zip ties, as they're impossible to undo again if you need to move or rearrange something. Grouping cables together is another way of helping to improve the airflow inside your case too.

If there are any loose cables, now's the time to fix them back into place.Ĭheck there isn't anything obstructing your fans either - shove any excess cabling through the holes in your motherboard tray if you've got them, or make sure cables are grouped together with cable ties or electrical tape and are positioned as far away from your fans as possible if your case doesn't provide any extra routing room round the back. To prevent all this from ruining the moment, take a good look inside your case and make sure there aren't any loose cables where there shouldn't be - give everything that's plugged in another firm press to make sure it's connected properly, and make sure all your components are sitting securely inside their various slots and connectors. And that's usually because you forgot to connect a cable somewhere or it's come loose - or maybe you even forgot to flip your power supply's switch on the back of your case. One of the most common problems when you first come to turn on your newly-built PC is… nothing happening.

Now it's time to double-check and triple-check that everything's connected properly, put your case back together and plug in those peripherals. Congratulations! You've made it through our How to Build a PC guide.

Keyboard that plugs into computer