New custom PC randomly restarting

[gerbillover]

Edit: It turns out one of the cables in my PC had become dislodged from the PSU. I've corrected this and now the PC seems to be fine.

So around 2 weeks ago, I bought a custom-built PC from CeX, and for the first week or so I had no problems with it. However, now I am having a few issues.

Firstly, often when I am using the PC, it will randomly restart, no warnings given whatsoever. Sometimes it will even just switch off, despite the power button staying lit and the fans continuing to operate. At this moment the power button is unresponsive, so I am forced to turn off my PC via the plug. It seems to have no care for when it restarts, sometimes even restarting when it is starting.

Another issue is that, occasionally when the computer starts up, I am greeted with a screen stating that Windows failed to start correctly, which asks me if I would like to restart or check the settings. When I choose to restart, it will restart and just go back into the cycle of random restarts.

Obviously, since this is a custom PC, the specs are;

OS - Windows 10
Processor - A4-6300 Dual Core with Integrated Graphics
RAM - 8GB
HDD - 500GB
SSD - 128GB

Thank you for reading, hopefully we can find a solution.

 

[Dark Lord of Tech]

What make and model PSU , usually pre-builts install low quality power supplies.

 

[gerbillover]

I'm not too sure what that means, but on the cable it says:

I-SHENG
18 - 14
10A 250V

 

[Dark Lord of Tech]

It would be on the PSU usually a large sticker with specs.

 

[gerbillover]

It would be on the PSU usually a large sticker with specs.

I don't see any large stickers, except for one on the area where it plugs in which says "AC 230V"

Just to clarify, is the PSU the cable or the area where the cable connects to the PC.

 

[Dark Lord of Tech]

It's the housing that the wall power cable is plugged into.

 

[gerbillover]

Ok, do I need to open up the PC to access this? Sorry if I'm asking too many questions, I'm quite new to this type of thing.

 

[Dark Lord of Tech]

http://www.anandtech.com/show/8754/psu-buyers-guide-holiday-2014
Look at this PSU pic ^

 

[gerbillover]

Pentium P4
M-500U Model

 

[Dark Lord of Tech]

It's a CIT power supply , very poor quality.

 

[gerbillover]

Ah ok, so is that likely the reason the PC has been switching off? If it is, the one thing that confuses me is for the first week i used it I had no power issues whatsoever, and as far as I remember I haven't changed anything.

 

[Dark Lord of Tech]

I would say yes these shutdowns are usually PSU issues.

 

[gerbillover]

Ok, would you recommend buying a new PSU?

 

[Dark Lord of Tech]

I would for sure.

 

[Dark Lord of Tech]

Something like this:

PCPartPicker part list / Price breakdown by merchant

Power Supply: Corsair CXM 450W 80+ Bronze Certified Semi-Modular ATX Power Supply (£49.97 @ Ebuyer)
Total: £49.97
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-04-13 15:51 BST+0100

 

[gerbillover]

Don't worry, I think I've actually managed to solve the problem. It seems that one of the cables inside my PC connected to the PSU had came out somehow. Sorry for bothering you, though I will say thank you for your help and I have learnt a few things from you.

 

[Dark Lord of Tech]

Glad to hear , but I would replace it in the future , enjoy your PC.