Ram is good hard drive spinning up and no boot turns on but no video output 3low long beeps 2 hi on

[mlamb4279]

Hi, I know it says it means a problem with ram but I have put three different sticks in it and I know they are working ones. I've cleared CMOS seated and reseated everything still no boot screen

[itsmyname]

@mlamb4279 -- have you tried just 1 stick at a time, and then putting that 1 stick into each socket?

Stick 1 - socket 1

Stick 1 - socket 2

Stick 1 - socket 3

Stick 1 - socket 4

Stick 2 - socket 1

Stick 2 - socket 2

Stick 2 - socket 3

Stick 2 - socket 4

and so on?

[WAWood]

@mlamb4279

While @itsmyname has provided you excellent advice, unfortunately, the HP documentation on this beep sequence says that if replacing the memory sticks with known good ones does not fix it, then it is likely the memory controller chip or something else with the motherboard -- neither of which can be fixed without replacing the entire motherboard -- and that is not a likely option.

[itsmyname]

@mlamb4279 -- is this your computer: HP Pavilion 590-p0053w Desktop PC Product Specifications | HP® Customer Support

It is sad that the "Product Release Date" was as recent as 02-Aug-2018 -- that is "young" for a computer to have a problem. Ouch.

Note that replacing a motherboard may also require the purchase of a new license for Windows 10, to further add a significant amount to the total cost of repairing the computer.  Ouch, again.

Can you test at least one stick of your RAM in a different computer, to prove that it is "known good" ?

Did you have recently have any "power surge" from the electrical power company that feeds power into your home?

Consider a "surge protector", to protect your "next" computer (one that is "ready for Windows 11" ???) from such an event?  Or, maybe, a UPS (Uninterruptible Power Supply) for greater protection to your computer & your monitor & your cable-modem & your printer?