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Mouse / Keyboard ports not working after power supply change

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templar_knight

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Posted August 17, 2013 at 7:06AM

I recently changed the power supply on my computer. The computer boots up ok but the ports for Mouse, Keyboard and a couple of USB ports adjacent to them don't work.

Could it be due to incorrect hooking up of the cables ... I have quite a few cables that are not connected anywhere to the motherboard. But I thought that was normal and these were for extra stuff like drives.

Anyhow, would appreciate if someone could point out what might be wrong in this situation and if my hunch is indeed correct.

Thanks, tk

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spuds

Likes # 1

Posted August 17, 2013 at 5:30PM

I assume that you have replaced the Power Supply Unit with a same type to that what was removed?.

There can be a number of unused cables, but normally the connections on the cables are fairly straight-forward. But I always suggest that marking or noting the cables if you are likely to be unsure on re-assembly, is a wise move.

You might find something helpful with this 7 page tutorial click here

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templar_knight

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Posted August 19, 2013 at 5:21AM

Thanks for the reply. Yes it was the same type of power supply.

The link you mentioned looks helpful. I will see (compare) if I have done everything in order.

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wee eddie

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Posted August 19, 2013 at 12:15PM

Shutting the Stable Door: I know that this is a bit late in the day and it wont help you now but it does highlight the, oft given, suggestion that one should take a photo of the site before starting work on the job.

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templar_knight

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Posted August 19, 2013 at 4:59PM

Ha good point! Will keep in mind for future. I was thinking this thing would be straightforward so didn't bother ... Lesson learnt.

:-)

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Terry Brown

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Posted August 20, 2013 at 12:31PM

I assume you have not something like putting the mouse plug in the keyboard socket and visa versa? assuming you are using the mini din sockets and not USB connections.

Terry

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wee eddie

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Posted August 20, 2013 at 1:08PM

For "mini din" read "PS2". They are usually Colour Coded.

To my mind, a better bet than USB as they almost always work in Safe Mode

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templar_knight

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Posted August 22, 2013 at 4:59AM

Thanks Terry and Wee Eddie,

The mouse and keyboard were connected to the correct ports (at the back of the machine).

Since these ports are not working, I hooked the mouse and keyboard into 2 USB ports that sit at the front of the machine. I used adapters for this.

Also, as I mentioned, the ports for the mouse and keyboad AND 3 USB ports at the back of the machine are all NOT working. That is why my assumption that I might have not connected the cables properly.

Cheers, tk

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templar_knight

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Posted August 22, 2013 at 4:59AM

Thanks Terry and Wee Eddie,

The mouse and keyboard were connected to the correct ports (at the back of the machine).

Since these ports are not working, I hooked the mouse and keyboard into 2 USB ports that sit at the front of the machine. I used adapters for this.

Also, as I mentioned, the ports for the mouse and keyboad AND 3 USB ports at the back of the machine are all NOT working. That is why my assumption that I might have not connected the cables properly.

Cheers, tk

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bumpkin

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Posted August 23, 2013 at 11:29PM

If all you have done is change the PSU then it seems like you have omitted one of the connectors or they are not in firmly. Look for small connectors from the PSU and matching sockets on the motherboard.

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bumpkin

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Posted August 23, 2013 at 11:48PM

I am assuming that these things worked before you replaced the PSU. What was your reason for changing it.

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