USBs only working intermittently

Kirth Gersen

Kirth Gersen

Kirth Gersen

Associate
Joined
4 Nov 2005
Posts
617
An ongoing irritant I have will my system is that some of the USB ports seem to work intermittently, and when I restart the system, will only work when I pull out the device and plug it in again. Others work fine.

Do people know if this is a known USB issue, or could it be a mobo problem?
 
To be honest it could be a variaty of things, have you tried a different PSU in your system? Could be a lack of power going to the USB ports. If thats not the problem then I would say it was the motherboard
 
I haven't tried a different PSU, but everything else works and 600W should handle it no problem. I wonder if there is a voltage tweak required somewhere.

If it is the mobo - it's fairly academic as I will be replace in September.
 
If your using vista, with some systems including mine has usb trouble. Mainly with external hdd amd pen drives. Do a search on the net, its a common problem with vista..
 
I've reinstalled the USB drivers to no avail (catch 22 that - you uninstall the drivers, restart and guess what - can't use the keyboard or mouse to finish the install!! - DOH. Had to dig out an old PS2 keyboard).

So it could be the PSU. Any way of stopping it undervolting?
 
Kirth Gersen said:
I've reinstalled the USB drivers to no avail (catch 22 that - you uninstall the drivers, restart and guess what - can't use the keyboard or mouse to finish the install!! - DOH. Had to dig out an old PS2 keyboard).

So it could be the PSU. Any way of stopping it undervolting?
Click to expand...

Take it out the system and replace it with a new one?

Seriously though, a new PSU or removing any "extra" bits in your system like if you have 2 DVD drives or something is the only real way to cure the problem of a PSU that is undervolting.
 
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