i have a dell 3000 when i upgraded my ram i goofed somthing up the computer would not start. now i have it up and running but it will not boot up it says no boot decvice found when i went to the bios it says no device installed now what
It sounds like you have dislodged a connection when you were installing the RAM. Go right through your PC and check every connection going in and coming out of the main board and all components (especially the HD). A good cleaning of dust would not hurt as well. Are all your fans working?