Thanks for your email & we are sorry to hear you are having some issues
Could you please try the following for us. If you don't feel comfortable trying these steps or if the steps dont fix the issue we can arrange to bring the PC back here to repair the PC for you.
Check where you have HDMI cable plugged in.
Could you send us a photo of where you have the HDMI cable plugged into the PC.
And also confirm that both your cable and monitor definitely work with another device xbox laptop another PC etc.
Some monitors and TV's have multiple inputs and you may need to select this input on the devices own menu.
Also some devices do not like warm changeovers so confirm this is not the case by turning both the Monitor/TV fully off and the PC then connect them and power on again.
If you are 100% sure you have the HDMI plugged into the Graphics Card HDMI port.
Please try the following
Turn your PC off and unplug the power cable, but leave the rocker switch in the ON position, so just unplug the cable.
Then using the power switch on top of the PC. Press and hold this switch for about 20 seconds or repeatedly press this switch for about 30 seconds.
Then try plugging the power cable back in and turning the PC back on.
If that hasnt resolved the issue please move on to the steps below.
Check sure your power lead, extension socket or wall socket are not at fault by changing them over to leads & sockets you know are working
Check internal Cables & CPU Fan
Check the Power switch cables
If you are unsure about this step please send us clear, close up pictures of these thin cables where they are plugged in to the motherboard.
Check the CPU Fan and Heatsink
Reseating the memory
Check memory Ram sticks and slots, individually one memory stick and memory slot at a time
Check GPU is fully inserted
Support Article - Check GPU is properly seated. – Dr Memory (XUM Enterprise Ltd)
If the above steps do not resolve your issue please try the following steps
Clearing/Resetting the BIOS
Removing the GPU and reseating the GPU
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