mosaic
Hi , There
Your BIOS is the latest .
Please make sure you did cmos right .
CLR CMOS
First, please unplug the power supply and HDMI cable.
Secondly, Please hit the “CLR CMOS” button/hole for about 10 seconds.
For some models the CMOS hole could be in the Audio port .
Please wait until 10 minutes later (THIS IS VERY IMPORTANT),
Then plug the power supply and HDMI cable back in, turn on the PC again,
once turn on the PC, you will need more than one minute to wait for the PC to enter the system.
See if it works. Please try few more times.
If the problem persists, Please try other solutions:
( With onboard RAM , Please skip the RAM solutions)
1.Please take out the RAM ,please clean the contacts of the RAM with a rubber. Here is the tutorial https://mega.nz/file/XqZX0TIR#_DtO2oa4aRP4bWtvxgKLj4QGhBpQ959cg5U3Yw4u1Cc or https://mega.nz/file/7nwDmCaL#UyzSmVkqJG8HW9dhjHhLkkzdP9gt2Br3xyCG1SCdbrA
Please leave only one RAM and without SSD inside. See if working.
When testing, please turn on the PC, And wait about one minute. Please try each RAM .
.Please take out the SSD and reseat it firmly.
4.Please take out BIOS battery ,and reseat it after 30 mins.
See if that makes it work .