So a couple days ago, I built my parents a cheap computer basically only for watching Netflix and watching movies and such and it started out well. Running Ubuntu 14.04, 3 gigs of RAM, 1.8 Celeron processor (working on upgrading to a 2.8 Pentium D) 120 gigs HDD a cheap graphics card and a PCIE wireless card. All was good till yesterday I was turning it on, then the power cord was knocked out of the socket, I didn't think much of it it it wouldn't boot up on the next power on. This was especially weird as every time I had turned it off previously, it booted up. This time, it powers on, HDD activity light that worked as normal as it should previously, was now constantly lit, and no beeping of any sort. So I turn to the most helpful place I know, if anyone knows what this is and how to solve it, it'd be greatly appreciated as we are currently watching Breaking Bad. Thanks in advance!