Most of the motherboard gives beep tone or light indication when POST completes. If there is no sign of life( no beep or even a led blink) then probably the MoBo not even attempted POST.
I suggest to double check that all motherboard power connectors are connected . Usually 4pin or 8pin 12v motherboard power connector(which you already connected),large 24pin motherboard power connector and sometimes additional 4 pin molex connector. There might also be an issue with power switch. You can try disconnecting power switch and touch the power switch pins simultaneously with conductive metal like screwdriver. Just careful when doing this. -Vikki On Tue, Feb 21, 2017 at 11:39 AM, Steven Mainor <st...@degga.net> wrote: > One time I hooked up the power switch to the wrong jumpers and it took me > an hour to figure it out. > > I would suggest double checking everything to make sure there's nothing > you missed. And as Felix already mentioned, parts can be dead on arrival so > that is the next thing I would look for. > > > -- > Steven Mainor > > > On February 20, 2017 4:41:30 PM EST, Felix Miata <mrma...@earthlink.net> > wrote: >> >> Dennis Wicks composed on 2017-02-20 15:00 (UTC-0600): >> >> I built myself another computer and it wouldn't boot up. No >>> messages or anything. I finally discovered that I missed >>> plugging in the 12V power to the MoBo. >>> >> I've done that many times while building, replacing or troubleshooting. You >> can't hurt a CPU by not giving it any power. >> >> I did that and it >>> still won't boot up, and still no messages diaplayed on the >>> screen or any other indication of life. >>> >> >> Have I ruined my processor turning the system on with out >>> the 12V >>> attached? (This is the four wires from the power >>> supply that plug into the mobo right next to the processor, >>> for those that may not be familiar with installing stuff.) >>> >> >> What have you done to prove your power supply isn't bad? New ones can be DOA. >> Did you install 100% compatible RAM? Did you try installing only one RAM >> stick, >> or leaving all unnecessary devices (if there is onboard video, the gfxcard; >> HD; >> DVD reader; accessory USB ports; speakers; etc.) disconnected? Are you sure >> the >> CPU is fully compatible with the motherboard's firmware/BIOS/chipset (just >> because it fits the socket is no guarantee it will work)? >> -- >> "The wise are known for their understanding, and pleasant >> words are persuasive." Proverbs 16:21 (New Living Translation) >> >> Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! >> >> Felix Miata *** http://fm.no-ip.com/ >> >>
