I'm asking, because while I was downloading a 1.5GB game, (Ace Online) I had to go to class and didn't return for over 6 hours. But when I got back and went on my computer the computer wouldn't respond, and the power button wouldn't work, so I had to turn it off via the surge protector. When I tried to turn on my computer, the PSU's fans started for about a 20th of a second, (really quick and subtle) but the system wouldn't turn on. This has happened before I've figured out it was the MoBo, of which was replaced. I imagine the CPU was the problem (an old Pentium D 820 from a refurb gateway) as it was the only thing that hasn't be replaced.
I'm asking because I heard from somewhere that when something like this happens, the best course of action is to replace all hardware, otherwise you could be using unstable components. You see, I have a wireless PCI adapter that I know for certain is compatible with my installation of Kubuntu and can use my home network's 108Mbps speed. I've tried looking for the same model but it is only available from a website that I've never heard of.
If it is advised to get a new card I will but, I really only trust newegg for their really good RMA department, in the off-chance that I get a DOA.
Thank-you for any advice