I've got Acer Aspire z5600 All in One PC with Win7 and it started to behave strangely recently.
It is shutting down constantly without any reason after being worked for a few munites.
I've run chkdsk /r, updated all drivers and windows. I think it might be hardware error like a memory or power supply, or because of option into BIOS for temperature shutdown.
I've run built in memory diagnostic test and mem test from ubcd and the pc has shutted down in the middle of the test and couldn't completed. The other problem is if it turns out as faulty memory I cannot replace it because I don't now how to open all in one pc(I cannot see any screws). I've opened a lots of laptops and desktops before but never encountered with all in one pc's. So any help on how to open it will be useful for me and any idea where else to look into to solve that shutting down problem,
Thank you in advanced!