Hdd error?

[bam1986]

first of all I want to thank you for having the time to read this.
my question is simple, I built a computer about a week ago, everythings is working fine. I installed windows 8 in a 2tb hdd. both hdd and optical drive are detected etc. but today I was using the computer as usual, left it alone for a couple of mins and when I came back I saw this:
No bootable device insert boot disc and press any key error

I decided to restart and everything started to work the way It used to, I checked bios and hdd is detected and working as usual. What do you guys think its the problem? faulty hdd, bad win 8 installation? thank you in advance.

 

[phil22]

It's more likely to be an intermittent hardware issue (the hard drive perhaps) than a windows issue. For peace of mind I would test the hard drive with drive maker's diagnostic software. If the drive has Windows installed on it, you must use diagnostic software which loads from a bootable CD. The links are here: http://www.tacktech.com/display.cfm?ttid=287

From the ISO file of the testing software you can create the CD with IMGBurn:
http://www.filehippo.com/download_imgburn/

Boot your new build from that CD to test the hard drive (use the Long/Extended test if available).

The hard drive may pass okay, but testing it is just one strand of the elimination process so that you can, if necessary, move on to checking other components in a logical manner.