My computer is about 2.5 years old, the video card is a bit over 1.25 years old, I think.
It works great in general, and has, except when the old video card went out.
I leave it on all the time...it is set to sleep after 2 hours. Each night, it sleeps, and wakes up in the morning just fine.
EXCEPT: Now, about 2 times in the past two weeks, and several times in the past month or so, it doesn't wake up. Instead, when I hit a key on the keyboard, a fan inside starts "roaring" fast, like a jet engine. Normally, the computer is totally quiet while using it (at least I can't hear it sitting under my desk about a foot away from me). I work it pretty hard and never have had any overheating problem.
When the problem occurs, I have to hard boot it. And sometimes, it just does the same thing a few times. What "seems to help" is turning off all external USB drives (I have two self powered USB3 external JBOD drive boxes each with two drives in it.)
So I turn those off, and then after a try or two, the computer comes on without the fan blaring (and as I mentioned, when the fan is blaring, it doesn't actually boot).
I am wondering if anyone has any idea what this could be? The video card (I note there's nothing on the video displays at all when it doesn't boot)? The main power supply? The motherboard?
I depend on this computer for work, so I'm tempted to replace it, since I usually buy a new one after 2-3 years, but this one's "loaded" and still seems to be quick enough so it seems a waste to replace it.