"No Signal" Message

[HGIGEO]

I’m getting a “no signal” message on my computer screen when I turn on the main power (red) switch at the back of the panel enclosure. The cooling fan for the enclosure starts up. The fan for the power supply and the fan for the computer do not turn on. I have power to the plug that goes into the power supply and I checked the power supply switch. Switch was fine so I thought it must be a bad power supply, so I changed that out and it didn’t solve the problem. I tried a different monitor and keyboard and even tried connecting the keyboard direct into the computer instead of going thru the cable. I have checked all of the cable connections. Last time I used the mill I had no issues.

I read on a blog for Centroid that someone had a similar problem and replaced the motherboard to solve it. Any ideas would be appreciated.

[Centroid_Liviu]

It sounds like the motherboard is not booting. If the screen is showing anything on the display at all, it indicates that the PC power supply is working.

What probably happened is the CMOS battery on the MB died and it lost the setting to boot on power up. if the fan on the CPU of the motherboard is not spinning, it's likely that the battery died on the MB. Follow the attached instructions to manually boot the motherboard. If it boots, replace the battery and set the BIOS settings as indicated in the instructions.

[HGIGEO]

My motherboard is different than the detail that you sent. Attached is a detail of my motherboard I found on the internet. In order to manually reboot the MB, do I just short the two pins on the left (with screwdriver) where it says PWR_LED? Can you tell me the BIOS settings?

Thanks

[HGIGEO]

My motherboard is different than the detail that you sent. Attached is a detail of my motherboard I found on the internet. In order to manually reboot the MB, do I just short the two pins on the left (with screwdriver) where it says PWR_LED? Can you tell me the BIOS settings?

Thanks

[Centroid_Liviu]

The two pins should be located as part of the F_PANEL section. Underneath the pins should be a description of what they are. It should be called something like PWR or PWR Switch. If you short the wrong pins there, nothing should happen (other jumpers control things like the hard drive led or reset switch). This Technical Bulletin has the bios settings for that particular motherboard.

[HGIGEO]

Got it. I am now back up and running. Thanks so much for the excellent advice.