I recently bought brand new parts to build my own PC. I had a friend put it together. He tested it on his monitor and the bios started up fine. I took it home and tried plugging it into MY monitor and there's no display. The power light is just yellow. The monitor is old but I know it works ( to an extent ) because my old desktop registers it. It's a 19 inch Dell. The port on the back of the new desktop is VGA. Here are the rest of my computer specs as follows. Mobo - MSI Z68MA-ED55 (B3) LGA1155 Intel Z68 B3 DDR3 SATA3 and USB 3.0 A&GbE MATX Processor - Intel Core i5-2400 3.10 GHz 6 MB Cache Socket LGA1155 Memory - Corsair Vengeance 8 GB ( 2 x 4 GB ) DDR3 1600 MHz (PC3 12800) 240-Pin DDR3 Memory Kit for Intel Core i3, i5, i7 and AMD Platforms SDRAM CMZ8GX3M2A1600 PSU - Corsair Builder Series CX600 600 watt 80 Plus Certified Power Supply Compatible with Intel and AMD Platforms ATX 700 CMPSU-600CXV2 HDD - Western Digital Caviar Blue 500 GB SATA III 7200 RPM 16 MB Cache Bulk/OEM Desktop Hard Drive - WD5000AAKX Video card - MSI AMD Radeon HD6850 1G Pcie GDDR5 Heatsink - Cooler Master Hyper 212 EVO CPU Cooler (RR-212E-20PK-R2) Like I said, he plugged the newly built PC into his own monitor and the bios started up fine. Any suggestions?