Newly built custom powers on, but goes no further.

Going to try and be as accurate and descriptive as possible here.

I just built a new computer, had issues getting the PSU to function, remedied that, but now am facing a new problem that I am unsure how to fix. Essentially it will power on, but not do much else. More detail is provided below.

Since this is a custom built, there has never been a time where it has functioned properly. However, two of the components (the GPU and PSU) are carry-over upgrades from my old computer. My old computer was an HP I purchased in 2008, which I upgraded the GPU (and subsequently needed a new PSU) in November 2010.

Here is the story. I just bought new components to completely revamp my rig. I already had the GPU and PSU from the previously mentioned upgrade, and decided to just do the rest. I got everything on Monday and began building it that night. I've used a static-safe wrist band the entire time, and have worked on computers before so I know enough to feel confident building a new computer. Everything was installed fairly simply but I did make a few mistakes that have now been corrected. First, I did not use the standoffs that came with the case. Since then I have installed them correctly, in line with where the mobo rests. Originally when I tried to power it up for the first time, I had failed to attach the 4-pin main power cord from the PSU to the mobo, only connecting the 20/24 pin thinking that was all. Second, I did not attach any of the wires that make the front of the case work (LED lights, power switch, reset switch, the two USB ports, and the external SATA port). And third, I had the RAM in the DIMM slots 3 and 4 and moved them to DIMM slots 1 and 2.

Since making these changes, the PSU now fires up, and the CPU fan runs at a constant rate. The LED lights inside the case turn on, and the lights for the power switch and reset switch also light up on the front of the case. However, the monitor is reading that there is no DVI input when it is certainly hooked up. I have checked to make sure the GPU is seated properly and as far as I can tell it is. Again, I have upgraded my video card several times over the last 10 or so years and I think it is fine. To be more clear about the situation here are some details:
- The PSU, case switches and lights all work and the CPU fan runs at a constant rate when power is on.
- The CD Drive will open and shut.
- Connecting a mouse causes it to flicker when the USB cable is inserted, but then appears to be dead. I tried all 10 USB ports and had the strongest "flicker" with the USB ports on the top of the case near the power switch. Also putting it in half way seemed to make it work for a little bit but with nothing on the screen to verify, all I can do is judge by the optical laser.
- The keyboard responded when I hit caps lock, scroll lock etc. but again, I could not test it on the screen.
- None of the 5 case fans run. I was unable to find a way to hook them up as their 4-pin (all in a row) power cords did not seem to match anything my PSU came with.
- In order to shut the computer off, the I/O switch on the back of the PSU had to be switched to the O position. Holding down the power switch on the tower would not work.
-I do not hear anything coming from the on board speaker.

Here are the specs with links:
Case (RAIDMAX Quantum ATX-798WB Black SECC ATX Mid Tower Computer Case):

CPU w/ Stock fan. (AMD Phenom II X6 1090T Black Edition Thuban 3.2GHz 6 x 512KB L2 Cache 6MB L3 Cache Socket AM3 125W Six-Core Desktop Processor HDT90ZFBGRBOX):

Mobo (MSI 870A-G54 AM3 AMD 870 SATA 6Gb/s USB 3.0 ATX AMD Motherboard):

HD (Western Digital Caviar Green WD10EARS 1TB 5400 RPM 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive):

OS (Microsoft Windows 7 Home Premium SP1 64-bit - OEM):

CD ROM (LG Black 12X BD-R 2X BD-RE 16X DVD+R 12X DVD-RAM 10X BD-ROM 4MB Cache SATA Super Multi WH12LS30 LightScribe Support - OEM):

RAM (G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model F3-10666CL9D-8GBXL):

Power Supply (XFX P1-650X-CAH9 650W ATX12V v2.2 / ESP12V v2.91 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply):

GPU (XFX HD-577X-ZMF3 Radeon HD 5770 1GB 128-bit DDR5 PCI Express 2.1 x16 CrossFireX Support Video Card with Eyefinity):

Some additional things to note:
1. I have gone through this checklist before this post =)
2. I am unsure if the PSU is sufficient for this computer but all the calculations I did said it was.
3. I can snap pictures of anything anyone wants/needs to see so just ask and I can do that when I get home.

I think that covers everything but if you have any questions just ask and I appreciate the help!
3 answers Last reply
More about newly built custom powers further
  1. Power supply is fine! It is possible that the motherboard got damaged when powered on without the standoffs!
  2. Is it sufficient? The GPU and CPU together recommend 625W and the PSU is only 650W...that's one question I haven't been able to answer yet.
  3. tws5d said:
    Is it sufficient? The GPU and CPU together recommend 625W and the PSU is only 650W...that's one question I haven't been able to answer yet.

    GPU manufacturer reccomends a 500 watt psu for the system that the card is going into ( can do it with much lower wattage )
    CPU TDP is 125 watts.
    Combined they don't equal power consumption.
    That psu could easily handle Tri fire 5770's ( don't know if it's even possible, not an ATI guy )
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