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Hi There,
I have an Acepc AK1 which has a powering up issue, when connected to a HDMI monitor and powered up the blue light comes up briefly then goes off.
Holding down the power button the blue LED light comes on but the screen is blank i.e. monitor shows nothing connected.
After 3 or more attempts it will start up and the computer boots up and loads Windows 10 Pro and works normally.
If left unattended for a while it goes into sleep mode but will wake up when key is pressed as normal.
If i power down the unit and press the power button it repeats the same problem.
I have disconnected the battery as per video and checked all the leads but still same problem.
I have two of these and the only difference i can see is BIOS in the one that works fine has more menu options.

Hello, please let us know more information, please tell me when is your purchase time.

Hi There,

Thank you for replying back and sorry for the delay. This was purchased from seller on eBay and the warranty had expired. The PC works when it powers up (I'm writing on it now).
I've powered up the PC using a bench power supply with the settings set as same as the mains adapter and still same issue...
Here's some system info if it can provide any info...

OS Name Microsoft Windows 10 Pro
Version 10.0.18363 Build 18363
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name DESKTOP-39O4EVU
System Manufacturer Default string
System Model Default string
System Type x64-based PC
System SKU Default string
Processor Intel(R) Celeron(R) CPU J3455 @ 1.50GHz, 1501 Mhz, 4 Core(s), 4 Logical Processor(s)
BIOS Version/Date American Megatrends Inc. 5.12, 18/09/2019
SMBIOS Version 3.0
Embedded Controller Version 255.255
BIOS Mode UEFI
BaseBoard Manufacturer PROLINE
BaseBoard Product ProlinePartner
BaseBoard Version 1.0
Platform Role Desktop
Secure Boot State Off
PCR7 Configuration Binding Not Possible
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "10.0.18362.1171"
Username DESKTOP-39O4EVU\laure
Time Zone GMT Standard Time
Installed Physical Memory (RAM) 6.00 GB
Total Physical Memory 5.85 GB
Available Physical Memory 3.23 GB
Total Virtual Memory 7.47 GB
Available Virtual Memory 4.57 GB
Page File Space 1.63 GB
Page File C:\pagefile.sys
Kernel DMA Protection Off
Virtualisation-based security Not enabled
Device Encryption Support Reasons for failed automatic device encryption: TPM is not usable, PCR7 binding is not supported, Hardware Security Test Interface failed and the device is not Modern Standby, TPM is not usable
Hyper-V - VM Monitor Mode Extensions Yes
Hyper-V - Second Level Address Translation Extensions Yes
Hyper-V - Virtualisation Enabled in Firmware Yes
Hyper-V - Data Execution Protection Yes

Hello,
Please try to change the HDMI port.