I am putting together a computer for a buddy of mine as a favor.... I start it up and it has no display, no beeps, and the CD/DVD drive does not open(the CD/DVD drive light is constant green). The hard drive doesn't sound like its spinnning. i've tested the power supply with another one i had, it is fine. All parts are new from tigerdirect. I dont have an extra 4x/8x AGP video card to test that out. USB mouse doesn't seem to have power and neither does the keyboard. The computer specs are: ASUS k8V-X SE Socket 754 motherboard AMD Sempron 2800+ Socket 754 64-Bit (Palermo) 380 Watt Raidmax Power Supply MSI Radeon 9250 128MB DDR AGP w/TV-OUT Video Card Maxtor 160GB EIDE HD 7200/8MB/ATA-133 1024MB of PC3200 DDR 400MHz RAM (ULTRA) LiteOn 16xDVD Burner Any suggetions or help would be greatly appreciated. Thanks!