10 mistakes every first time PC builder makes



Category: PC Building Tips

10 Common Mistakes Noobs Make Buidling a Gaming PC Thumbnail

Building a custom gaming PC for the first time is a tough challenge. Knowledge about the components is one thing but assembling a PC all by yourself is another. There is a lot of stuff going on when you're making a custom PC from screwing in the motherboard to plugging in all the wires. Just one component or cable off its place and your computer will not work until its fixed.

There are tons of guides available on building a gaming PC. However, Building a PC for the first time is a process in which there isn't a single person in the history that hasn't committed a mistake. Even pros commit silly errors and mistakes sometimes. So here are the 10 mistakes every first time PC builder makes and how you can avoid them.


1) Trying to Put together incompatible hardware

Buying incompatible hardware is the single most committed mistake by first time PC builders. It is very easy to purchase components after reading a "Budget PC Components Under $500" guide only to later find out that those components are not compatible with each other or are too small or big to fit inside your case of choice.


You need to be on the lookout for not just the physical compatibility of the components with each other as well as the case, you also need to look out for the technical compatibility. It sucks to find out that your graphics card is not compatible with the power supply unit or the RAM sticks are not compatible with the motherboard.

How to avoid it?

The best and easiest way to avoid this mistake is extensive research. Make sure that all the components you purchase, including the case, are physically as well as technically compatible with each other.

2) Plugging the Monitor into the Motherboard instead of the graphics card

Plugging the Monitor into the Motherboard instead of the graphics card is an overlooked mistake in PC building guides that is committed by more than half of the first time builder. This is an annoying problem which will make all your CPU work perfectly with all the fans buzzing and the LEDs glittering, but the monitor will have no signal.

How to Avoid it?

Check where your monitor is plugged in. If it is plugged in motherboard’s rear I/O panel, then remove it and plug it in the graphics card. If you're still encountering problems, make sure that the GPU is connected in the Power Supply Unit and there are no loose connections.

3) Installing the CPU in the wrong alignment

Installing the CPU in wrong orientation can be often overlooked if you think like common folk- "Documentations? Ain't Nobody got time for that." Your CPU won't work if it's not installed in the correct alignment.

aint nobody got time for that meme
How to avoid it?

You don't need to read all the documentation. What a relief! All the CPUs have some kinds of marking on them, AMD uses a golden arrow. All you need to do is align this marking with the one on the motherboard, and you're all good to go. Also, do not touch the CPU's power pins.

4) Not installing CPU's Power Connection

Another common mistake again with the CPU. If you don't install your CPU's power connection, it will do absolutely nothing when you boot it up. No need to panic, it can easily be plugged in even if you forgot to do it while initially installing the CPU on the motherboard.

How to avoid it?

The CPU's power connection is located on the top left corner of your motherboard. It requires a 6 pin or 8 pin connection (depending on the CPU), and it may be marked as 'cpu_pwr' on the motherboard. The position may differ depending upon the motherboard, but you can refer to the motherboard’s manual for the exact location.

5) Forgetting to plug in the CPU cooler

It's another pretty common mistake that goes hand in hand with the previous error. When you're excited to boot up your first build after installing the CPU, plugging it and even installing the CPU cooler, you may leave out the cooler's power connection that's probably just wrapped around the cooler itself.

deep cool cpu cooler
How to avoid it?

You'll find the CPU cooler's power socket somewhere near the CPU's power socket on the motherboard. It may be marked as 'cpu_fan' on the motherboard. Once again, the position may differ depending upon the motherboard, but you can refer to the motherboard’s manual for the exact location.

6) Not Installing the RAM correctly on the motherboard

It is a common occurrence that RAM is not installed correctly on the motherboard by the first time PC builders. Installing the RAM wrong will result in the RAM not taking advantage of dual channel pairing or not going into the RAM slot at all. If your RAM is not instaled correctly, your build will be not functional.


RAM is installed in the DIMM slots. If you look carefully, the pins on the RAM stick as well as on the slot are not split 50/50, but somewhat 60/40.

How to avoid it?

When you're installing the RAM in the slot, align them together and apply pressure on either side of the RAM stick until you hear a 'click'. If you don't hear a click, it's probably not set in place. Try doing the whole thing all over again.

7) Forgetting the connection for storage devices (HDD/SDD)

It is not uncommon that first time builders forget that all drives except for M.2 SSDs require two connections, one from the Power Supply Unit and the other one from the motherboard. Many of the first time builders may just connect one of the either two con.

How to avoid it?

Just remember that your storage devices need two connections.

8) Not switching ON the PSU’s power button

Not switching ON the PSU’s power button is just a silly mistake that you might overlook out of excitement.

How to avoid it?

Make sure that the PSU is turned on or the system won't start.

9) Not Taking Care of the Screws

When you open up all the components, you'll remove tons of screws. Chances are that you'll just throw them away until you need to close it all up. It may be plausible that screws from two components look identical but actually are not. If you use the wrong screws, it may result in loose or over tight parts.

How to avoid it?

Use little baggies or the boxes of the components to store all the screws separately until you need them again.

10) Take care of the wires

Now, this is a mistake that is committed by not just the first timers but pros as well. Once you've installed all the components and your PC is up and running, you'll just want to stuff all the cables inside. Who's got time for cable management then? However, cable management will help you out a ton when you want to clean your PC or upgrade any of the components.

How to avoid it?

Look out for cable management right from the beginning. Use zip ties to tie cables together.