I normally leave it on and let it hibernate or whatever. I don't think its the power supply because the light does come on, but nothing else happens. I went from an intel 2500, intel DH61CR and 16gb DDR3 ram at something like 700mhz, to everything that i listed. ... so accidentally connecting power to pins that control the reset button or hard drive light … When i turn my computer on, the power light comes on but, nothing happens. Question System won't boot, motherboard cpu debug light turns on: Motherboard light is on but PC not turning on: Question White or yellow light on motherboard, won't post and screen won't turn on: Question Pc turns on and off repeatedly. When I connect my power cable the standby LED on my motherboard comes on. But still computer is not booting up and nothing on monitor. When I turn on my DS Lite, the green light powers on, but nothing happens. No whir, no fan. There is no sound at all, and the screens don't show up. I turned off the device successfully and unplugged it before the power supply was cut. This is my first time doing this so i wasnt surprised i had to do this. Worked fine yesterday. Now you get back to do that. I disassembled it and tried to eject the screens, to see if the DS Lite recognises that one or two screens are ejected. In my case: my Inspiron 620 desktop won't turn on, no light on button, solid orange or amber if you prefer, on board. it seems not to boot up and nothing - Answered by a verified Tech Support Specialist We use cookies to give you the best possible experience on our website. When I push the push-button switch, the light comes on, but nothing else happens...no fans, no lights in the back, nothing. For christmas I wanted to upgrade my cpu, motherboard and ram. The LED on the mobo simply tells you that there is … However when I hit the power switch on the front, absolutely nothing happens, no fan spinning, no beeping, nothing. So I come home and go to turn on my computer. When I tried to turn it on the power button did nothing. Nothing. It's as if the computer isn't plugged in. Pressing power button does nothing. I took all of the old parts out and put in all of the things but nothing … PC won't power on. I've opened the computer up and visually inspected everything and couldn't seem to find anything unusual. I have power now but my device fails to perform any functions other than turn on the solid green light on the motherboard, I've followed procedures like unplugging the device and holding the … I came home Friday night to my computer off. It's happened before, quite often actually, in fact, part of me thinks that if I go upstairs and press the button right now, it would whir to life. - posted in Internal Hardware: I have this 8 year old desktop PC that worked 12 days ago. Here are five common culprits that can keep a new motherboard from working, and how to fix them. 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