Windows 8 installation disc not valid

[siteattack]

hey guys i have had my computer for about 2 years now and recently i have been experiencing issues with constant blue screen of death maybe around 5+ times a day i originally tried getting help from Microsoft but they where useless and said if i needed more help it was going to cost me so yeah i left it for a couple weeks and today i tryed updating windows which when restarted tryed to automatically repair my computer which failed and now im stuck in the menu where you choose to either trouble shoot, turn pc off or continue to windows 8.1 (if i click continue to windows 8.1 it restarts computer and brings me back to same screen) so in order to turn on my computer i have to repair/refresh it to do so it says i have to insert my windows installation disc but when i do it it says it is not valid. i have no idea what to do now has any one had this problem/know how to fix it that would be a life saver thanks

[JefferyD90]

Looks like its time for a clean install of Windows.

http://linustechtips.com/main/topic/324871-guide-how-to-install-windows-the-right-way/