• Monitor not detecting input
    2 replies, posted
I recently built a new computer for school and decided to give my brother my old one, provided he replace all the parts I salvaged - the optical drive, RAM, and HDD. I also removed one of the two GTX 570s. Before installing the new hardware I dusted it out, as I have before, with a big ass air compressor. A while later when all is said and done I plug it in and turn it on. Lights flash and fans spin (except for one, I'll get to that), but the monitor stays black. Fuck. So far I've tried replacing the video card with its twin, replacing it with his old 5850, and replacing the new HDD with my old one (haven't tried reinstalling the RAM, but that appears fine). Nada. Now for that one fan. The motherboard in this computer is the [url=http://www.newegg.com/Product/Product.aspx?Item=N82E16813131821&Tpk=sabertooth%20z77%20mb]ASUS Sabertooth Z77[/url]. See that tiny fan between the CPU socket and the top PCI-E slot? It doesn't spin when the computer is on, but when its powered down the thing kinda twitches. I think it worked fine before I took some of the parts out to put them in my new build and dusted it, and it might just be an isolated derpy fan, but it's the only abnormality I can see. UPDATE: Was looking at it again today and the CPU and DRAM POST LEDs were blinking red. That's not good. This only started happening after I pushed the MemOK button. The CPU LED blinks, then turns off, but the DRAM LED goes solid after blinking. I doubt that it's any bent CPU pins, seeing as how I haven't touched the CPU for over a year. Gonna try clearing CMOS then switching out the RAM next.
Check the pins on your cables. One could be bent or the cable could be broken. I have the same motherboard and the little fan is completely unrequired. All it's meant to do is run for 5 minutes after shut off to sharply cool off the computer for longevity. Try resetting your CMOS as well. The drastic change in hardware could keep your motherboard from POSTing properly.
[QUOTE=Naelstrom;41924694]Check the pins on your cables. One could be bent or the cable could be broken. I have the same motherboard and the little fan is completely unrequired. All it's meant to do is run for 5 minutes after shut off to sharply cool off the computer for longevity. Try resetting your CMOS as well. The drastic change in hardware could keep your motherboard from POSTing properly.[/QUOTE] My guess is that the fan got fucked when I was dusting the computer out, but I'll definitely keep the CMOS reset in mind when going at it again tomorrow.
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