Pc randomly crash cpu and vga light flashes red on motherboard.

[samtehsheep]

Can somenone please help me.

 

So I built my first pc 2 days ago, everything worked fine both gpu and cpu were sitting on around 70c when gaming.

Then suddenly when i was just browsing the internet the pc just crashed and the vga and cpu light flashed red on the motherboard. 

The pc restarted and no damage was done. After that it started crashing frequently and Ihave no idea how to fix it, do you have any suggestions?

 ive updated my bios, updated gpu drivers and unisnstalled old one ive tried everything

(crashed 2 times while writing this)

 

Pc specs

mobo: msi tomahawk b450 max ComboAM4PIV2 1.2.0.2

cpu: r5 3600

gpu: asus matrix r9 290x (bought second hand from facebook marketplace)

ram: corsair vengeance pro 2x8gb

psu; corsair cx650m

[BadBoyHaloCat]

What about looking at the hardware? Is the GPU seated and clicked into the PCI slot? Have you reseated the CPU? Are all of the cables connected tightly?