Hi, I just recently built a custom PC with the following parts: ASRock M3A770DE AM3 AMD 770 ATX AMD Motherboard XFX HD-567X-ZNF3 Radeon HD 5670 1GB 128-bit DDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card COOLER MASTER Elite 460 RS-460-PSAR-J3 460W ATX12V V2.31 Power Supply AMD Athlon II X3 445 Rana 3.1GHz Socket AM3 95W Triple-Core Desktop Processor ADX445WFGMBOX G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) Dual Channel Kit Desktop Memory Model F3-10600CL9D-4GBNT Western Digital Caviar Blue WD2500AAJS 250GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive Hanns·G HZ201HPB Black 20" 5ms HDMI Widescreen LCD Monitor SAMSUNG CD/DVD Burner Black SATA Model SH-S223C - OEM Rosewill CHALLENGER Black Gaming ATX Mid Tower Computer Case ,comes with Three Fans-1x Front Blue LED 120mm Fan, 1x Top 140mm ... I assembled everything (I have had experience building PC's in the past, no problems) So upon boot, I get an error message on my monitor saying "No input detected" The monitor is connected via HDMI to the graphics card. All of the case fans and LED's are running. The cpu fan and the graphics card fan is running. The optical drive opens and closes no problem. So here are the things i try: Connect monitor to another pc via VGA, works fine Switch graphics card to another PC with bigger PSU, connect via DVI, no problems I have no idea what could be wrong. Please help. Let me know if you need some more info. Could it be a CMOS issue?