I finished building my pc, and plugged my VGA cable into a DVI-VGA connector then plugged that in to my video card but my monitor does not detect it, it just says no VGA signal then monitor going to sleep. I took the video card out multiple times and made sure it was secure. The power is hook up on it and the fan on the card spins.. What could I be doing wrong? My monitor is a compaq Q1859 and my video card is MSI R7770-PMD1GD5 Radeon HD 7770 GHz Edition 1GB 128-bit GDDR5 PCI Express 3.0 x16 HDCP Ready Video Card