Apr 22, 2021
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Hello, my HP 290 G1 MT Business makes three long beeps and two short beeps on startup with no display. Tried removing the RAMs and cleaning the memory slot but all to no avail. I also tried using working RAMs and changed the CMOS battery but it still didn't change anything. Swapped harddisks also but it didn't work. Blowed the pc but nothing changed
 

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