I have a HP Pavilion a1487c, when ever I turn my computer on in the mornings it takes three times to boot up. The lights and fans go on but on the first two attempts nothing happens on the screen, no beeps or anything. The CPU fan will go on full blast the first two attempts and stay on but on the third try the CPU fan will go on full blast then rest again followed by the HP screen.
I have tried replacing the PSU, GPU, and testing each ram stick individually but no results. I tried resetting the bios settings by removing the battery for about 15 minutes but still the same thing happens. I have also tried flashing the bios but still got nothing.
CPU: Intel Pentium(R) D 2.8Ghz (Originally had Intel V//V)
Ram: 4GB DDR2
GPU: ATI Radeon HD 4670
P.S: Sorry I'm not sure what topic this post should be in.
your system is really old your better off with a new one and its better you choosing your parts and case etc and you building them
and for your problem it happened to me before once like 6 years ago and i hit it a few time and the problem stopped being honest here