Built a PC but the monitor won't pick up any signal

TheDbr22

Honorable
Dec 29, 2013
1
0
10,510
I built my pc, plugged in my video cables and on the screen the words "Check Signal Cable" appear. All the fans, the power switch stays on. I haven't used any disk drives yet or anything. My video card is a VisionTek Radeon HD 7870 and my monitor is a Samsung SyncMaster 931b.