Powersupply: Thermaltake TR2 S 500W [4 Months old]
Is Fortnite only causing this issue, or even other PC games are crashing on your PC ?
Anyways, that Thermaltake PSU
might be the culprit, but I'm not 100% sure. The Thermaltake TR2 power supply is a VERY poor/inferior quality model, and they all have had bad reputation in the past as well. Don't ask why, but I've read many horror stories regarding this TR2 Model.
Not recommended for GAMING PCs. Replace this PSU ASAP. That's a very low-end TIER power supply. These TR2 models are mostly listed under the lowest category in the PSU hierarchy list. I won't advice you to use this TR2 Model, even though it's just 4 months old. There is some risk factor. Grab yourself some other
high quality power supply unit.
Power supplies are an imperative part of your system that should not be taken lightly. Throwing in a budget PSU could result in poor power efficiency or even a wrecked system. Don't SKIMP on the PSU,, since this is the MOST important PC component. I can't stress this enough.