No Chime But No Beeps On Startup
Recently upgraded my MacBook Unibody running 0S X 10.8.4 w/ the following, all from Crucial:
-4GB 1067 MHz DDR3
The computer operates extremely well with two exceptions: it periodically freezes completely (4-5 times in eight weeks), and does not chime on startup (but also doesn't beep).
I've cleared the SMC and have tried to clear the NVRAM/PRAM but I'm pretty confident the latter isn't completing. When I power my computer on and press OPTION COMMAND P R simultaneously, a light grey screen appears briefly, then turns "off", then repeats. This will go on and on but no chime or no successful startup occurs.
I'm assuming the POST is identifying something that's wrong and therefore will not proceed with a proper startup but from there I'm kind of lost as to how to proceed.
I removed my optical drive so cannot attempt an AHT, as far as I know.
Any guidance would be greatly appreciated.
Is this a good question?