This computer was working great for a while, then I took out the original i7-7700 out to put in my brother's new PC and I put an old (but still working prior) Pentium G4560 in its so my mom could have it. Installed a new SSD and tried to boot it just to get 3 long red beeps and 2 short white beeps which according to HPs site is a "memory initialization error". I tried reseating the RAM (1 stick of 4gb ddr4) in each slot, taking it out completely, and even trying my own ram from my working PC and it still didn't work.