Automatic reboot randomly

Fazkool

Reputable
Jul 2, 2014
7
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4,510
I have a PC built approx. 4 months ago and still doing well until today without changing anything since then. Here is the specs :
Processor Intel Core i5 4430 3.0Ghz
Motherboard ASRock H81M
4GB RAM Corsair Vengeance
PSU Corsair VS 550w
Zotac GTX 760 Amp! Edition

First couple of months, it ran smoothly with no problem, even when playing heavy games on 1080p. But few weeks ago, I was trying to play my Black Flag (which ran smoothly before) but after going through the menus (sometimes even before) and loading, my PC suddenly rebooted itself without any notice (No weird sounds, no BSOD, no freeze). It's the same with any heavy game that I could play before. Some of them could run on lower resolution and graphic settings, but it always reboots when I try to play 1080p. I asked here about it and many concluded it was the PSU, but since I don't have the budget to replace it yet, I just restrict myself by using only essential applications like browser and watching videos.

Then a month later, it became worse that sometimes it even restarts on startup. It restarts randomly when I browse or watching videos.

These are what I have been trying to do :

- CPU stress test = no problem
- Updating and rolling back drivers = no changes
- The temp doesn't increase much, so I assume it's not overheating
- Recently I find that the outer part of the PSU has some dust, but I don't know how to clean the insides so I just clean the ventilations

So did my continuous use affect the more frequent reboots? I'm also still finding the replacement PSU for my rig, can you give some recommendations?

Thanks in advance :)