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Don't worry, the PC has one-year warranty. Here are some potential solutions: First,please unplug the power supply and HDMI cable. Please press the pinhole of "CLR CMOS" with a pin for about 10 seconds.
Ten minutes later, plug the power supply and HDMI cable, turn on the PC again. If the problem persists, please try other solutions:
①Please change another HDMI cable or power supply.
②Please take out the RAM ,please clean the contacts of the RAM with a rubber. Here is the tutorial https://mega.nz/file/XqZX0TIR#_D ... hBpQ959cg5U3Yw4u1Cc or [https://mega.nz/file/7nwDmCaL#Uy ... P9gt2Br3xyCG1SCdbrA](https://mega.nz/file/7nwDmCaL#Uy ... P9gt2Br3xyCG1SCdbrA)
③ Please take out one RAM and leave the other one in it to test if the RAM is defective or not.
④Please check if the fan spins?
⑤Please tell us if the Keyboard light is on ?(Very important). If the keyboard light is on, it should go to the system, we need to troubleshoot HDMI or the monitor.
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