Question pc loose every 20 min up to 1 hour the connection signal with monitor

[razorcool]

i have 2 pc plugged in (with hdmi outputs) to 1 monitor with 1 mouse and keyboard via switch one of them is with 550 power supply 2 hard (1ssd+1sata) with native msi and amd 5600G processor where and I use the integrated graphics card for about 1 year suddenly started from nowhere at first rarely to lose the signal on the screen for 1-3 seconds and return the last but 6 months did it with frequency every 20 minutes to 2 hours i e lost the signal for a few seconds up to the previous week where he lost the signal and didn't give it back. immediately i changed the hdmi cable nothing changed 2 monitors nothing changed hard and did a clean install maybe and he was making something out of the software nothing so i sent it to Msystem for repair they returned it to me in 3 days telling me the pc is working properly and without any problems . i asked if they let it work 1-2 days continuously and they said yes they did and a simple benchmark they put it back to me and sent it back to me. with the connection after 2 hours the problem came back Less and again clearly lost completely but completely the signal from the computer .Suppose it's either the cpu with the built-in gpu or the motherboard? or you think it's something else that i hear opinions.......... by the way the other pc worked and worked normally on the monitor so it can't be the monitor

 

[Lutfij]

When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

 

[razorcool]

BIOS: IS UPDATE IN THE LATEST VERSION
CPU: AMD 5600G
CPU cooler: IT WAS INCLUDED WITH CPU A NORMAL ONE
Motherboard: MSI(I DONT KNOW THE EXACT MODEL IS ALREADY SEND TO COMPANY FOR CHECK)
Ram: 2X8 G SKILL
SSD/HDD: 1SSD KINGSTON/1SATA TOSHIBA
GPU: ONBOARD
PSU:750 WATT IT IS 2 MONTHS THAT I GOT IT THE PREVIEW ONE WAS 2 YEARS 650 WATT
Chassis: KOLING
OS: WOIN10 PRO X64
Monitor: LG TV 19 WITH 2 HDMI 1 VGA

BIOS: IS UPDATE IN THE LATEST VERSION
CPU: AMD 5600G
CPU cooler: IT WAS INCLUDED WITH CPU A NORMAL ONE
Motherboard: MSI(I DONT KNOW THE EXACT MODEL IS ALREADY SEND TO COMPANY FOR CHECK)
Ram: 2X8 G SKILL
SSD/HDD: 1SSD KINGSTON/1SATA TOSHIBA
GPU: ONBOARD
PSU:750 WATT IT IS 2 MONTHS THAT I GOT IT THE PREVIEW ONE WAS 2 YEARS 650 WATT
Chassis: KOLING
OS: WOIN10 PRO X64
Monitor: LG TV 19 WITH 2 HDMI 1 VGA

 

[razorcool]

BIOS: IS UPDATE IN THE LATEST VERSION
CPU: AMD 5600G
CPU cooler: IT WAS INCLUDED WITH CPU A NORMAL ONE
Motherboard: MSI(I DONT KNOW THE EXACT MODEL IS ALREADY SEND TO COMPANY FOR CHECK)
Ram: 2X8 G SKILL
SSD/HDD: 1SSD KINGSTON/1SATA TOSHIBA
GPU: ONBOARD
PSU:750 WATT IT IS 2 MONTHS THAT I GOT IT THE PREVIEW ONE WAS 2 YEARS 650 WATT
Chassis: KOLING
OS: WOIN10 PRO X64
Monitor: LG TV 19 WITH 2 HDMI 1 VGA