Question PC suddenly won't boot, solid white CPU light. Urgently need help

[Whiteli54]

Specs:
B550-A-Pro
Corsair Vengeance 32gb ram
Ryzen 5 5600x
Crucial 500gb SSD + 2X Seagate Barracuda 4tb
RM750x
Zotac RTX 3060 12gb oc edition

I built the PC a week ago and everythings been fine, but I forgot to put the IO shield on. Last night I figured I should do it, but now my PC won't boot. The motherboard displays a white CPU light so I figured maybe I had to reseat it, but no dice. Next I tried moving ram, only using 1 ect. Still nothing. Taking all ram sticks out does switch the indicator to DDRM so it able to get past CPU.

Basically tried everything I could. CMOS reset, flashing bios, removing ssd, tightening and loosening CPU cooler, swapping different power cables out, but it still won't boot. I'm at a complete loss and really need help. What could I have done? I just took the parts out, installed io shield and put it back on.

 

[Aeacus]

A checklist to do: https://forums.tomshardware.com/thr...deo-output-troubleshooting-checklist.1285536/

Do the checklist. If no dice, i may have an idea of what happened.

 

[Whiteli54]

A checklist to do: https://forums.tomshardware.com/thr...deo-output-troubleshooting-checklist.1285536/

Do the checklist. If no dice, i may have an idea of what happened.

Did try all of this and still nothing. CPU pin did a tiny bit of paste on it, but that was after the problem already started. I gently wiped it off with a q-tip but still nothing. I'm suspecting the motherboard or ram

 

[Aeacus]

Did try all of this and still nothing.

Then it's component failure.

RAM can be easily validated, IF you have spare DDR4 DIMM laying around.

MoBo is though part. Both testing wise and replacing wise.
To know for sure, haul your PC to PC repair shop and pay for diagnostics.

As of what might have happened, ESD to MoBo during your installation of I/O shield, thus short circuiting MoBo and killing it.

 

[Whiteli54]

Then it's component failure.

RAM can be easily validated, IF you have spare DDR4 DIMM laying around.

MoBo is though part. Both testing wise and replacing wise.
To know for sure, haul your PC to PC repair shop and pay for diagnostics.

As of what might have happened, ESD to MoBo during your installation of I/O shield, thus short circuiting MoBo and killing it.

Aww man that sucks,but you're probably right. I was doing it standing on carpet but I've never had an issue with it. Always make sure to ground myself

 

[Aeacus]

I was doing it standing on carpet

Carpet collects A LOT of static charge in it. Especially when you wear socks.

Any work with PC internals is best done on hardwood/concrete/metal surface and either wearing ESD protection shoes or barefeet. Also, keep yourself grounded, either by active bracelet with grounding wire or ground yourself from time to time (e.g i like to touch the metal part of the central heating system i have in my home).

but I've never had an issue with it. Always make sure to ground myself

Ever wondered why electronics factories do their level best, to keep their production line static and dust free? Or why electronics are shipped in anti-static bags?

ESD is a silent killer and many don't think about it, until there are consequences.

Here's a good, in-depth vid to watch about ESD:
(It's a long one, but very informative.)

View: https://www.youtube.com/watch?v=m54ifTCgtN4

 

[Whiteli54]

Carpet collects A LOT of static charge in it. Especially when you wear socks.

Any work with PC internals is best done on hardwood/concrete/metal surface and either wearing ESD protection shoes or barefeet. Also, keep yourself grounded, either by active bracelet with grounding wire or ground yourself from time to time (e.g i like to touch the metal part of the central heating system i have in my home).


Ever wondered why electronics factories do their level best, to keep their production line static and dust free? Or why electronics are shipped in anti-static bags?

ESD is a silent killer and many don't think about it, until there are consequences.

Here's a good, in-depth vid to watch about ESD:
(It's a long one, but very informative.)

View: https://www.youtube.com/watch?v=m54ifTCgtN4

Yeah I understand. I made sure not to wear socks or anything super static-y if that makes any sense lol. Only other thing I did was tighten the CPU cooler but I doubt that's the culprit

 

[drivinfast247]

Check the IO shield and make sure it's not shorting anything. Check around the USB and HDMI/DP ports.

 

[faalin]

Check the IO shield and make sure it's not shorting anything. Check around the USB and HDMI/DP ports.

i was going to say that as well. I/O shields normally have little fingers the press against the outside metal case of the ports, make sure none of them have ended up inside the ports and shorting something out.



My next thought would be to pull the motherboard out of the case and set it on a cardboard box and try booting it up. while the board is out check to make sure when placing it back into the case you didnt scratch it on a standoff. Also make sure all plugs are installed.... 24 and single or double cpu 8 pin

 

[Whiteli54]

i was going to say that as well. I/O shields normally have little fingers the press against the outside metal case of the ports, make sure none of them have ended up inside the ports and shorting something out.



My next thought would be to pull the motherboard out of the case and set it on a cardboard box and try booting it up. while the board is out check to make sure when placing it back into the case you didnt scratch it on a standoff. Also make sure all plugs are installed.... 24 and single or double cpu 8 pin

Tried putting it on a cardboard box and still the same issue, also made sure there's no prongs going in prior to plugging everything back in.

In terms of the scratch, I suppose it's possible because I had to readjust it to line up on the standoffs, but I don't think that would be the cause
Ill double check though

 

[Whiteli54]

i was going to say that as well. I/O shields normally have little fingers the press against the outside metal case of the ports, make sure none of them have ended up inside the ports and shorting something out.



My next thought would be to pull the motherboard out of the case and set it on a cardboard box and try booting it up. while the board is out check to make sure when placing it back into the case you didnt scratch it on a standoff. Also make sure all plugs are installed.... 24 and single or double cpu 8 pin

So I checked the back thoroughly, and nope no scratches.