Increasing problems with new PC, could the motherboard be the main source of issues?

[Satearn]

Problems seem to be never ending...I'm just about to throw the whole computer out the window..(5 floors high enough?

This is what the PC does now:

- Pushing HDMI cable all the way in the slot shuts it off...if I wiggle it, it starts working again
- Screen becomes blank randomly (no signal) and then flickers back on
- On the screen, sometimes the whites become yellow and pixelated, wiggling the HDMI cable sometimes helps, sometimes not. This happens without moving the cable at all
- System crashes, and restarts with blue screen, boot order changed without my control to another disk and not the main OS, need to restart with F2 and reset correct booting order in BIOS
- Saw a Kernel Error a while back ID 41 I think, but today rebooted in it's own without kernel power error

Bios is up to date, so is software, all components less than a year old, brand new SSD, brand new HDD


Desktop
CPU/Processor: Intel i5-8400
Memory: DDR4 16 GIGS Kingston Hyper X Furry
MOBO: As Rock z370pro 4
https://www.asrock.com/MB/Intel/Z370%20Pro4/index.asp
PSU: Corsair VS450
https://www.jib.co.th/web/index.php/product/readProduct/23279/6/POWER-SUPPLY-CORSAIR-VS450--80--WHITE-
Monitor: LG 24MP48HQ-P 24"
https://www.lg.com/us/monitors/lg-24MP48HQ-P-led-monitor
Intel HD Graphics 630
Operating System: Windows 10 64 bit
SSD 1: Samsung EVO 860 250Gigs
SSD 2: Samsung EVO 850 120Gigs
HDD 3: Hitachi 1 terra
Serial: 79M0XB264580
BIOS: p3.20

 

[InvalidError]

If wiggling the HDMI cable cause the PC to shut down, then I'd suspect the GPU isn't correctly installed into the PCIe slot or the motherboard isn't correctly installed in the computer case and is shorting against something such as a stray standoff.

 

[Satearn]

If wiggling the HDMI cable cause the PC to shut down, then I'd suspect the GPU isn't correctly installed into the PCIe slot or the motherboard isn't correctly installed in the computer case and is shorting against something such as a stray standoff.

Well, a flake installed it at the PC shop in THailand...so wouldn't surprise me...it has no GPU...

Wiggling the HDMI doesn't shut off the PC, it shuts off the display, PC shuts off on it's own.

These problems started maybe after a few months after PC purchase, and getting worse with time.

 

[Calvin7]

Replace the HDMI cable with a High Speed cable.
https://www.monoprice.com/product?c_id=102&cp_id=10240&cs_id=1024008&p_id=3992&seq=1&format=2

The port can also be damaged. If so, get a cheap video card.

 

[The Original Ralph]

i have that same problem of screen going black on two different computers - one on an Asus mobo and the other was an Asrock mobo. If i move the computer an inch or two, i usually have to reach around the back and move the hdmi cable a bit - sometimes it's the hdmi port on the back of the monitor, not often,but occasionally. But not the whites becoming yellows - i haven't seen that issue -

on the BSODs - download free copy of WhoCrashed, and it will usually tell you the cause - you can research what it identifies, via google. once you install it, in upper left corner, clik on "Analyse", then scroll down to bottom of report to see results. Here's link to the software direct - do not download from Cnet, softpedia, etc http://www.resplendence.com/whocrashed

 

[InvalidError]

HDMI uses one wire pair per primary color. If the screen goes yellow, it means you lost the blue channel. That's either a bad cable or broken GPU/monitor port.

 

[Satearn]

HDMI uses one wire pair per primary color. If the screen goes yellow, it means you lost the blue channel. That's either a bad cable or broken GPU/monitor port.

I tried 4 different HDMI cables, and 2 of them brand new out of the box from new LG monitor.

System has no graphics card, stock intel hd630 from i5-8400, I hope it's not a fried CPU graphics card...? ;(

 

[Satearn]

i have that same problem of screen going black on two different computers - one on an Asus mobo and the other was an Asrock mobo. If i move the computer an inch or two, i usually have to reach around the back and move the hdmi cable a bit - sometimes it's the hdmi port on the back of the monitor, not often,but occasionally. But not the whites becoming yellows - i haven't seen that issue -

on the BSODs - download free copy of WhoCrashed, and it will usually tell you the cause - you can research what it identifies, via google. once you install it, in upper left corner, clik on "Analyse", then scroll down to bottom of report to see results. Here's link to the software direct - do not download from Cnet, softpedia, etc http://www.resplendence.com/whocrashed

That's a great idea, but I don't have time wait for further crashes, board is under warranty, so I've decide to return it, let's hope I get a new one and they don't try to patch it up with duct tape!

 

[Satearn]

Update:

Tried an DVI cable with HDMI adapter from PC to monitor and it does't work, so it seems DVI port also fried?

 

[The Original Ralph]

i have that same problem of screen going black on two different computers - one on an Asus mobo and the other was an Asrock mobo. If i move the computer an inch or two, i usually have to reach around the back and move the hdmi cable a bit - sometimes it's the hdmi port on the back of the monitor, not often,but occasionally. But not the whites becoming yellows - i haven't seen that issue -

on the BSODs - download free copy of WhoCrashed, and it will usually tell you the cause - you can research what it identifies, via google. once you install it, in upper left corner, clik on "Analyse", then scroll down to bottom of report to see results. Here's link to the software direct - do not download from Cnet, softpedia, etc http://www.resplendence.com/whocrashed

That's a great idea, but I don't have time wait for further crashes, board is under warranty, so I've decide to return it, let's hope I get a new one and they don't try to patch it up with duct tape!

WhoCrashed will report from the dump files created by your previous BSOD's - no need to wait for future events

 

[InvalidError]

System has no graphics card, stock intel hd630 from i5-8400, I hope it's not a fried CPU graphics card...? ;(

If the CPU's IGP was fried, wiggling the HDMI connector wouldn't help. Since you tried different cables, your intermittent signal is likely due to a broken or bad connection on the motherboard's HDMI port.