What sort of warranty did you get? I hate to say this but, since you mentioned it's a refurb, it's quite possible the shutdown problem is why it was returned. It could be some sort of weird intermittent issue that could not be duplicated so it went back out the door with a fresh reload of the OS. You might try booting just to the BIOS or some utility using an external CD ROM to see if it happens that way too. The HD manufacturer's diagnostics disk or memtest86 would be good choices for this experiment in that you could attempt to rule out/in the RAM or HD failure possibility.
My Acer netbook aspire (WinXP 1gig ram) one just shut down on its own one day.
Now it will only stay on for 25 seconds before turning off by itself completely!
I tried going to setup - 25 sec.
Regular boot -- 25 secs
Safe mode command prompt -- 25 sec.
System recovery -- 25 seconds from the time the on button is pushed.
What is wrong?
Not overheating. Could it be bad ram? bad hard drive? motherboard? What?
Bought as a refurb unit from CompUSA