Full specs for the machine are below. This is an HTPC that we've had for about 2 years that has worked flawlessly until now. We just moved this weekend and now it won't power up at all. I was VERY careful moving the unit and the move was only a block away so I can assure you the machine was not beat around or even jostled much. I've been trying to troubleshoot this but one of my problems right now is that they haven't come to hook up our broadband yet so we have no internet access and I'm stuck using only my phone which is tough for viewing schematics and manuals, etc. Its also in a small cube case which makes seeing anything difficult...the case has an upper and lower part though and I can remove the upper part (with cables/powersupply, etc) which will give me better access to the board underneath, I halfway did this last night but ran out of time so I will do that fully tonight based off your suggestions
Here are the symptoms:
1)When I power it on, it appears to power up for about 3 secs then shuts down completely. It never gets past this 3 sec mark. Its got 4 fans (3 rear, one front) plus the CPU fan. These all spin up when power comes on
2)There are 4 Phase LED lights on this board, when power comes on they light up green-green-yellow-red. I can find no solid documentation on what exactly this means beyond the manual which simply states "The number of lighted LEDs indicates the CPU loading. The higher the CPU loading, the more the number of lighted LEDs". Can anyone offer more insight on this, can they actually be used to diagnose anything or are they just the equivalent of the 'check engine' idiot light?
3)I 'believe' the board has a speaker installed on it (though I haven't been able to find it, again its hard to see the whole board in detail). But I base this on past experience booting the machine up it would issue a single short beep at the very beginning of its startup (and I assume that would have to be coming from a speaker on the board right? not thru the soundcard?)
4)I've tried some of the simple troubleshooting techniques I've found on these forums but no luck yet. I tried popping out the RAM, no luck, I tried removing the TV tuner card and the attached sound card but no luck. I 'believe' the GeForce 9400 is that big chip right smack in the middle of the board right? I haven't tried removing that because I couldn't get to it. I am reticent to reset the CMOS because I don't want to have to set that all up again and I don't really know how to. It seems to me that its much more likely a component that has failed or a power supply issue.
I've combed these boards looking for advice and the main thing that concerns me is that there seems to be a lot of 'try this' type advice often without a solid basis in troubleshooting the exact problem. I'm not trying to be a dick here, there are clearly some knowledgeable folks on here as well who are a great help, I just want to be very deliberate in how I approach this because I think that has the highest chance of success. There's a good article on here for step-by-step troubleshooting that I intend to follow (http://www.tomshardware.com/forum/261145-31-perform-steps-posting-boot-video-problems), please if you have any other suggestions, lend me a hand, thank you
Antec Earthwatts 430W 80+ High Efficiency Low Noise Power Supply
Gigabyte GA-E7AUM-DS2H m-ATX nVidia 9400 Motherboard
Intel 3.0Ghz E8400 Core 2 Duo CPU / 1333 fsb / 6mb L2 Cache / VT
4gb DDR2-800 Memory (2048x2)
Q2 Seagate 1TB SATA-II Pipeline DVR Hard Drives
LG Blu-Ray Player - DVD-RW / ArcSoft TotalMedia
Integrated nVidia 9400 Graphics / Hybrid SLI / D-Sub / DVI / HDMI / 1080P
Hauppauge 2250 Dual ATSC / NTSC TV Tuner
52 in 1 Memory Card Reader
Integrated Intel Gigabit Network Interface
Intel 7.1 Channel Dolby Home Theater Surround Sound
Microsoft Vista Home Premium Operating System
Here are the symptoms:
1)When I power it on, it appears to power up for about 3 secs then shuts down completely. It never gets past this 3 sec mark. Its got 4 fans (3 rear, one front) plus the CPU fan. These all spin up when power comes on
2)There are 4 Phase LED lights on this board, when power comes on they light up green-green-yellow-red. I can find no solid documentation on what exactly this means beyond the manual which simply states "The number of lighted LEDs indicates the CPU loading. The higher the CPU loading, the more the number of lighted LEDs". Can anyone offer more insight on this, can they actually be used to diagnose anything or are they just the equivalent of the 'check engine' idiot light?
3)I 'believe' the board has a speaker installed on it (though I haven't been able to find it, again its hard to see the whole board in detail). But I base this on past experience booting the machine up it would issue a single short beep at the very beginning of its startup (and I assume that would have to be coming from a speaker on the board right? not thru the soundcard?)
4)I've tried some of the simple troubleshooting techniques I've found on these forums but no luck yet. I tried popping out the RAM, no luck, I tried removing the TV tuner card and the attached sound card but no luck. I 'believe' the GeForce 9400 is that big chip right smack in the middle of the board right? I haven't tried removing that because I couldn't get to it. I am reticent to reset the CMOS because I don't want to have to set that all up again and I don't really know how to. It seems to me that its much more likely a component that has failed or a power supply issue.
I've combed these boards looking for advice and the main thing that concerns me is that there seems to be a lot of 'try this' type advice often without a solid basis in troubleshooting the exact problem. I'm not trying to be a dick here, there are clearly some knowledgeable folks on here as well who are a great help, I just want to be very deliberate in how I approach this because I think that has the highest chance of success. There's a good article on here for step-by-step troubleshooting that I intend to follow (http://www.tomshardware.com/forum/261145-31-perform-steps-posting-boot-video-problems), please if you have any other suggestions, lend me a hand, thank you
Antec Earthwatts 430W 80+ High Efficiency Low Noise Power Supply
Gigabyte GA-E7AUM-DS2H m-ATX nVidia 9400 Motherboard
Intel 3.0Ghz E8400 Core 2 Duo CPU / 1333 fsb / 6mb L2 Cache / VT
4gb DDR2-800 Memory (2048x2)
Q2 Seagate 1TB SATA-II Pipeline DVR Hard Drives
LG Blu-Ray Player - DVD-RW / ArcSoft TotalMedia
Integrated nVidia 9400 Graphics / Hybrid SLI / D-Sub / DVI / HDMI / 1080P
Hauppauge 2250 Dual ATSC / NTSC TV Tuner
52 in 1 Memory Card Reader
Integrated Intel Gigabit Network Interface
Intel 7.1 Channel Dolby Home Theater Surround Sound
Microsoft Vista Home Premium Operating System