Ok, I have a client who has a older machine, HP Pavilion 510n Desktop Intel (R) Celeron (TM) 1.2 GHz, 40g hd and 256mb memory...yeah, told u it was older...anyway, she had some boot issues, was able to boot into windows via recovery cd, ran chk dsk, installed all windows updates sp 2 and 3 and critical updates, ran hd diagnostics with hd tune...everything good......turned machine off.....went to power it back on 6 hours later.....will not post.....continuous beep code (about 1 sec each).....removed ram, tested power supply, on board video card, removed/inserted all cables inside the pc........I am stuck......