[Sode no Shirayuki]

Hi,

I have a Dell XPS 410 that immediately reboots itself when powered on. A few times it has allowed me to use my Linux Mint disc for a little while before spamming the shutdown menu then rebooting. The majority of the time it immediately, repeatedly reboots itself, reaching only the black screen that checks my devices, just before the computer asks me whether I would like to boot from an inserted disc. The computer will also reboot itself when I'm in the BIOS, if I manage to enter the BIOS. I disconnected all peripherals as well as removed the RAM sticks and graphic card, but the issue still occurs. I also tried a brand-new power supply and a new motherboard, but they didn't work either. I believe that just leaves the CPU and power switch board. How likely is the CPU responsible for this issue? Could it be the power switch board?

Specs: http://postimg.org/image/rzues2zqt/ (Note: Currently, there is no OS on either hard disk.)

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Hi,

Did you test with new RAM? It could be the power button itself, normally you can disconnect the string that connects the button to the motherboard and then short the motherboard power pins with a flat head screwdriver only for a second to turn on the machine.

In case there is a Reset button on the case disconnect that also, the computer will work fine without that one connected.

Edited by SleepyDude, 24 August 2013 - 05:06 AM.

[SleepyDude]

Hi,

Did you test with new RAM? It could be the power button itself, normally you can disconnect the string that connects the button to the motherboard and then short the motherboard power pins with a flat head screwdriver only for a second to turn on the machine.

In case there is a Reset button on the case disconnect that also, the computer will work fine without that one connected.

Edited by SleepyDude, 24 August 2013 - 05:06 AM.

[Sode no Shirayuki]

Hi,

Did you test with new RAM? It could be the power button itself, normally you can disconnect the string that connects the button to the motherboard and then short the motherboard power pins with a flat head screwdriver only for a second to turn on the machine.

In case there is a Reset button on the case disconnect that also, the computer will work fine without that one connected.

1) I haven't tested the new RAM yet, but the computer doesn't stay powered even without RAM. I'm waiting for a reply from the seller to see if I can return the RAM after it's been opened.

2) There are two wires connecting the switch board to the motherboard. Should I just disconnect them both? These are the two wires:

http://www.ebay.com/...=item415d9dde0b

http://www.ascendtec...lliofk2010.aspx

3) What are the motherboard power pins?

Edited by Sode no Shirayuki, 26 August 2013 - 09:58 AM.

[SleepyDude]

3) What are the motherboard power pins?

It depends on the motherboard in some its like this:


You have to disconnect the Power SW cable and use the flat head screwdriver to short the two pins.

[Sode no Shirayuki]

I don't have a cable that is labeled "Power SW." This is my motherboard if it helps:

http://www.ebay.com/...=item5ae2c0c90e

[SleepyDude]

I don't have a cable that is labeled "Power SW." This is my motherboard if it helps:

http://www.ebay.com/...=item5ae2c0c90e

Its on the black connector near the blue Sata port.

Did you connect the extra power connector near the RAM sockets?

[Sode no Shirayuki]

I don't have a cable that is labeled "Power SW." This is my motherboard if it helps:

http://www.ebay.com/...=item5ae2c0c90e

Its on the black connector near the blue Sata port.

Did you connect the extra power connector near the RAM sockets?

Do you mean the long, slim connector that's in the upper right-hand corner of the board next to the blue SATA connector? This wire connects into that: http://www.ascendtec...lliofk2010.aspx

Yes, both power connectors are connected.

Edit:

This is an image of the inside of my computer:

http://postimg.org/image/merxrf1t3/

Edited by Sode no Shirayuki, 26 August 2013 - 12:45 PM.

[SleepyDude]

So they use a full cable, the manual doesn't specify the pins used maybe you can find the button connection if you access the front panel it seems the ribbon is used to transport the signals to the front to another connector I suppose.

[Sode no Shirayuki]

So they use a full cable, the manual doesn't specify the pins used maybe you can find the button connection if you access the front panel it seems the ribbon is used to transport the signals to the front to another connector I suppose.

Look for it on the switchboard? I'll have to figure out how to get it out. The manual doesn't seem to say how to remove the switchboard. If the ribbon is used to transport signals to the motherboard, I can't help but wonder if that might potentially be the problem. Perhaps the signals aren't being properly transported? A new ribbon is really cheap.

Edited by Sode no Shirayuki, 26 August 2013 - 03:22 PM.

[SleepyDude]

Look for it on the switchboard? I'll have to figure out how to get it out. The manual doesn't seem to say how to remove the switchboard. If the ribbon is used to transport signals to the motherboard, I can't help but wonder if that might potentially be the problem. Perhaps the signals aren't being properly transported? A new ribbon is really cheap.

Check the Service Manual page 44.

[Sode no Shirayuki]

Look for it on the switchboard? I'll have to figure out how to get it out. The manual doesn't seem to say how to remove the switchboard. If the ribbon is used to transport signals to the motherboard, I can't help but wonder if that might potentially be the problem. Perhaps the signals aren't being properly transported? A new ribbon is really cheap.

Check the Service Manual page 44.

Oh, thanks. I got the panel out, but I'm not sure what I'm suppose to short. There are 4 pins underneath the board that connect to the power switch.

[SleepyDude]

Oh, thanks. I got the panel out, but I'm not sure what I'm suppose to short. There are 4 pins underneath the board that connect to the power switch.

Can you take a picture?

[Sode no Shirayuki]

Oh, thanks. I got the panel out, but I'm not sure what I'm suppose to short. There are 4 pins underneath the board that connect to the power switch.

Can you take a picture?

Does this help or do you need a picture of the board underneath? I have the computer mostly together again. I'm testing out the new RAM. I think the 4 pins might be the solder that hold the power switch on the board. They look different than the other solder joints, though. They're longer and thin like a needle.

http://www.ascendtec...audelhh180.aspx

Edited by Sode no Shirayuki, 27 August 2013 - 12:08 PM.

[SleepyDude]

Oh, thanks. I got the panel out, but I'm not sure what I'm suppose to short. There are 4 pins underneath the board that connect to the power switch.

Can you take a picture?

Does this help or do you need a picture of the board underneath? I have the computer mostly together again. I'm testing out the new RAM. I think the 4 pins might be the solder that hold the power switch on the board. They look different than the other solder joints, though. They're longer and thin like a needle.

http://www.ascendtec...audelhh180.aspx

Thanks, with a connection like that you can't disconnect nothing because it's like a micro switch soldered on the board.

[Sode no Shirayuki]

Oh, thanks. I got the panel out, but I'm not sure what I'm suppose to short. There are 4 pins underneath the board that connect to the power switch.

Can you take a picture?

Does this help or do you need a picture of the board underneath? I have the computer mostly together again. I'm testing out the new RAM. I think the 4 pins might be the solder that hold the power switch on the board. They look different than the other solder joints, though. They're longer and thin like a needle.

http://www.ascendtec...audelhh180.aspx

Thanks, with a connection like that you can't disconnect nothing because it's like a micro switch soldered on the board.

So basically, I would just have to replace the entire switch board and maybe the ribbon if that's the problem?