How to confirm whether Motherboard or PSU has died!!!

mgph

Distinguished
Oct 17, 2008
30
0
18,530
My rig has been running for more than 6years and started from last 2 months, sometimes it couldn't boot up, power on -> power LED on and fans run -> power off itself -> repeat itself. It went back to normal if I unplugged PSU power cord, wait a few seconds, and then plugged in. It happened the same again yesterday and this time, it couldn't go further no matter how many times I tried using different methods, cables remove, GPU remove, etc. I suspected the PSU (CM Silent Pro 850w). So I replaced with Thermaltake TPG 1050w. It initially run fine and booted into desktop, after a few seconds, freeze. No response from everything, mouse pointer, keyboard, or even power button. On/off power cable & PSU switch, it happened the same, booted into windows then freeze. After 2/3 times failed, it went back to the previous state, power on -> power LED on and fans run -> power off itself -> repeat itself until PSU switch off. I couldn't even have a chance to try in safe mode. Now I have removed the power cable and I'm worried if my new PSU has died again due to my rig's possible internal shocks. My friend suggested that it could possible be MOBO because the PSU fan is running whenever the system is on. In last 2/3 months, strange things such as BIOS screen appeared in color corruptions, BSOD without running anything, desktop/in games freeze a few times, etc. caused me to force hard reset.

My current rig is as follows:
CPU: i7-930
MOBO: Asus P6X58D-E
GPU: R9 290 Sapphire tri-x 4gb
RAM: Xtreme DDR3 1866 6gb (3x2gb)
OS HDD: OCZ Vertex 2 60gb
PSU: CM Silent Pro 850w --> Thermaltake TPG 1050w
Casing: CM 690 II

I posted a thread here yesterday for my rig upgrade and here is the link: http://www.tomshardware.com/answers/id-2642567/upgrading-930-4790-sapphire-290x-tri.html. Now my rig is totally in deathzone :(

Thank you so much in advance!!!
 

videobear

Honorable
Feb 27, 2012
103
0
10,710
Try both your power supplies in another machine. If they work there, the problem is your motherboard.

If you don't HAVE another machine, see if you can borrow a friend's. Or, measure the voltages produced by the power supplies using an inexpensive digital multimeter, although this won't tell you how the PSUs are acting under load.
 

mgph

Distinguished
Oct 17, 2008
30
0
18,530


I will try testing PSU. Is there anyway to test the motherboard ?