Desktop does not boot No POST as well

pradeepsixer

Commendable
Jul 21, 2016
6
0
1,510
Problem Summary

My Desktop was working fine. Then, when I switched on my PC after an hour of halt, it won't boot. Initially, it showed me POST screen (Gigabyte logo with options to enter BIOS, Boot menu) with a single beep, then going to Gigabyte Dual Bios screen, then restarting, in a loop. Now, I don't even get the POST Screen.

System Specs

First System - The one with problem

    ■ AMD Fx-8350 Processor
    ■ Geforce GA-970A-DS3 motherboard
    ■ Corsair 8Gb RAM
    ■ Seagate 2TB Hard Disk
    ■ ZOTAC 610 Graphics Card
    ■ Cooler Master 400W PSU


Second System - Works well - For testing components from First System

    ■ AMD Fx-8150 Processor
    ■ ASUS Sabertooth 990FX R2.0
    ■ Transcend 8 GB RAM
    ■ Seagate 2TB Hard Disk
    ■ MSI GeForce GT 430
    ■ Cooler Master Thunder 450W PSU


Description

I was working in my PC yesterday. Then shut it down for an hour or so. When I switched it on again, it showed the BIOS screen, with a single beep showing sign of successful POST, then just went to Gigabyte Dual BIOS screen. Then it restarted and then went to the same screen.

I looked up over the internet and found a similar reddit post and followed accordingly. But that did not help my case. From then onwards, I do not even get the BIOS screen.

Things I tried


    ■ Swapped the components (RAM, PSU, Graphics Card) with Second PC and the Second PC worked pretty well with these components from first PC. But First PC did not work with the swapped components from Second PC. So I ruled out the possibility that any of these three components might be malfunctioning.
    ■ Then, removed the RAM and switched on the PC - getting continuous short beeps.
    ■ Reinserted the RAM, removed the Video card from MoBo, but there is no beep sound
    ■ Also removed and reinserted the power cables as well - no luck
    ■ Removed the CMOS battery and reinserted it, as in the reddit post, but that did not help my case. Also, tried resetting the BIOS with a jumper and that too did not work out.


Since, the system was working previously with the same PSU, and no components were added, there is no possibility of the power requirement by MoBo not met.
Also, now I notice that the CPU fan turns off two to three seconds after I switch on my PC. (I don't remember this happening with my previous tries, but atleast this did not happen immediately in my previous tries)
 

Barty1884

Retired Moderator
Can you post the full specs of both rigs?

If I understand correctly, the 8350 does not work in either rig, but the 8150 works in both? With all else being equal.

Is the BIOS up to date in system #2?

Initially, it sounded power related. But he 8150 & 8350 have near identical power draw/requirements.
If one works, the other should - assuming BIOS is up to date.

CPU's are pretty resilient, so they don't just 'die'. They're either defective from the off, or are 'fried' during excessive, non-stable overclocking.

Have you examined the 8350 for bent pins?
 

pradeepsixer

Commendable
Jul 21, 2016
6
0
1,510

I have updated the question with the Specs of both desktops

Yes, 8150 (Second PC) works will the components from the first PC (CPU was the only thing that was not swapped)

If you're talking about the First One (Faulty one), I am not really sure, but since it was working previously, there should not be any compatibility issues and no one has modified the BIOS settings as well (atleast not manually).


I do not overclock and also have not removed the heatsink from the processor - so the processor getting fried is something that could have been only remotely possible

I did not take out the heatsink/processor, so that should be crossed out as well.
 

Barty1884

Retired Moderator
Ok, with those specs, I'm at a loss - calling in some reinforcements.

What PSU are in each? The CPU is the common denominator, which is almost always the last to go. It sounds like the CPU (to me), perhaps the memory controller element - but I'll get some more opinions.
 

pradeepsixer

Commendable
Jul 21, 2016
6
0
1,510


The one that is in a faulty one is Cooler Master 400W PSU and the one that is in a working one is Cooler Master 450W PSU.