I just bought some new upgrades from newegg, new mobo asus A8N-SLI Deluxe retail, AMD 64 3700 retail, XFX Geforce 7600 GT, new harddrive, Antec truepower 2 500 PSU. I have installed pc's before and this is my first time running into problems. I plug everything in also making sure i dont tighten the screws on the mobo to the case too tight. Upon power up I dont hear anything but the fans from the PSU and the fan on the heatsink. I'm also using a wireless keyboard and mouse and try to hold down delete key upon power up and nothing happens. i'm really stump and would love any help possible. I may try to resink the ram again but any other suggestions would help a lot. Also the only way for me to shut down the pc is by hitting the off switch in the back of the PSU or unplugging the power cord.