Worst Tech mistake you have ever made?

[Kazooey]

forgot to put on the cpu mounting backplate, screwed the cooler directly into the mobo

[MrRavens]

Lean on the case sidings when they're off. Luckly I felt the flex and backed off.

[deVIZtation]

Having to punch out the 5.25" drive bay to a cheap case because it was impossible to take off. Got some bloody knuckles, so no big deal.

[railfan]

I accidentaly installed windows in 32-bit and i dont want to fix it

[eurekH]

Here is mine, modding the side panel of my first build, i cut out a window wit out tapping the side panel, my skills with the dreamel were 0, so i ended up scratching the hell out of the side panel, had to painted it, so i ended with a two tone case for a long time until recently y wrapped the hole case in carbon fiber vinyl, and now looks awesome. 

[Interfectorem]

My C70 case has a post in the middle motherboard standoff instead of a screw hole, so I put the motherboard in and didn't unscrew the rest of the screws to go do something else, when I come back, I forgot that it wasn't screwed in and I flip my case over, and out goes the motherboard, luckily there was no damage.

[Palfi]

When i was building my first PC i made a mistake of buying a pre-build PC.

Never again!

[BrokenOnion]

A few things

 

- Bought a somewhat low-end card instead of saving up for a better one.

- Bought a board that doesn't support SATA 3.0 thinking i would never buy an SSD.

- Cheaped out on the PSU.

[Jfreun1]

Got a gtx 970 and amd 7850k which was a huge bottle neck...35 fps on low with bf4

[MRL]

Thinking my Seidon 240M will fit properly inside CMStorm Scout 2. Broke the DIMM slot on mobo after I knocked the DIMM in the process.

[Sonefiler]

My friend had two triple slot R9 290s so we used cardboard pieces to hold them up.

Another friend couldn't find the standoff screws so we used these really long ones that you are supposed to use for radiators. It looks hilarious looking at it.

[El_indian]

The other day i spent 3 hours trying to get a display signal after replacing my PSU fan (with a PWM Noctua).

 

...I had forgotten to plug in the 8-pin CPU power cable.

[Charlie Clarke]

opening up my psu while it was running and touching a metal bit to see if it was hot and getting electrocuted badly

[MoDtEc]

tried to get off a assembled backplate of a mobo i bought used 

i destroyed the mobo completely

 

and i used a molex adapter thingy to connect the 4-pin on a friends build. he wanted to use the psu from is prebuild pc he had before for thet and it s 4 pin was wayyyyy to short for the new case

[Espen]

I had a friend who forgot to buy a motherboard and than he bent one of the CPU pins. 

[KemoKa]

I cut a fan grill off out of my case in order to put the radiator on top instead of the fans. With metal snips. My computer is a lot quieter now.

[nowva]

touched the old AT case power switch terminals with an non insulated screw driver while powered on, it was shocking ! can anyone remember AT cases lol ?

[Will Barnard]

Put the motherboard in without the standoffs.

wow. Ahahaha

[Will Barnard]

Bought a cheap £30 ($45) PSU, used it for a year then realised how bad it was. Got a Corsair AX760 two weeks ago

[RevyOcelot]

Went overkill on the PSU going 250W over what I needed.

[WolfDeville]

When I built my i7 860 rig I had the ram in the wrong channels and I was going crazy for 3 days trying to figure out why it wasn't working. To my defence, manual that came with my Gigabyte motherboard instructed to put it in those slots....

[shadowblitz3]

cheaped out on a psu once

[Will Barnard]

cheaped out on a psu once

Same, never again.

[IhazHedont]

I bought a noname power supply.

 

I think you know what will follow, but I was lucky; only my CD-DVD drive burned.

[JTB123]

For my first build I actually put RAM which wasn't compatible with my MOBO, strangest thing is though it worked. This did lead to problems further down the road which is what made me look into the RAM I had used, that's when I found out and used compatible RAM  I also put my hard drives in with the cables facing the left hand side of the case in my first build, my cables looked sooooooo bad