This is my first time building a computer so I'm a little lost. I put everything together and pushed the power button but it didn't turn on. No surprise. So I took everything out except for the motherboard and power supply just to see if it would turn on, and i got it to turn on. I connected the hard drive and cd-rom, and tried to turn it on to make sure it was still working. Once again the computer doesn't start. I decide to switch out the power supply from an older computer into mine, to check if the power supply was a little faulty. The computer doesn't turn on; however, the newer power supply actually turned the older computer on, so the power supply is fine. Could the problem be my motherboard or the power switch on my case or what?
if it helps-
Western Digital Caviar SE16 WD6400AAKS 640GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive - OEM
GIGABYTE GA-G31M-S2L LGA 775 Intel G31 Micro ATX Intel Motherboard - Retail
G.SKILL 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Retail
EVGA 01G-P3-N891-AR GeForce 9800 GX2 1GB (512MB per GPU) 512-bit (256-bit per GPU) GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Retail
Antec EA650 650W ATX12V Ver.2.2 / EPS12V version 2.91 Power Supply 100 - 240 V UL, CUL, FCC, TÜV, CE, CB, C-tick, CCC - Retail
Intel Core 2 Duo E8400 Wolfdale 3.0GHz 6MB L2 Cache LGA 775 65W Dual-Core Processor - Retail
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