Is this G still under warranty ? Sounding like a MB issue.
Kind of the slow kill kind that happens when your little brother spills something on it and
says nothing .. ect.. (not to imply that is what happened here in any way.)
PM cl-scott (if this is still under warranty-heck even if its not .. he may be lonely.)
with the particulars and your location and see if he can point you in the right direction.
btw..no beeps ??? (does the G beep?) Can you hear it spinning up .. but no video ??
Are (no offense) you sure its ram and not video ... or a 'slight bump' maybe something
needs reseating ?? (shooting in the dark..)
(i re read you OP .. no lights .. No lights. Im think'n MB--imho. without it on the bench.)
Best of Luck bitt3n..
keep us 'posted' on your progress with this.c.
Members: Never hesitate to PM cl's - it helps 'them' too .. it's a formula.(hehe)