Weird PS/2 problem

nbarb99

Senior member
Mar 14, 2003
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I was messing with our "Kitchen" computer today, seeing if it would respond to any OC'ing, and a very weird thing happened. I put the FSB too high (forgot that those old Celly's can't run 100MHz) and it wouldn't post.. that's happened before, just gotta reset the CMOS with a jumper.

Then I rebooted it, and it posted fine. As expected, it gave an "invalid CMOS settings" error and prompted me to go into setup. I noticed it also said "keyboard error", and saw the keyboard was unplugged :p It must've slipped out while I was resetting the CMOS. I plugged it back in and I started to smell a burning smell, which is VERY BAD in computers. I'm not sure if the smell "started" before or after I plugged in the keyboard but I panicked and unplugged the power. The "burning" smell smelled similar to dust burning..

Finally, I got courageous enough to turn it back on and it was fine, apparently. It booted into XP and I realized I was wrong :p The mouse wasn't working. I thought that maybe since the CMOS was reset, the PS/2 mouse setting was disabled, or something. This is a slightly older motherboard and (PCChips M767V) it uses an "ATX riser card" for the PS/2 and USB connectors.

I tried a whole lot of stuff but it just doesn't take the mouse. I plugged in my MS Intellimouse Optical so I could tell (since it has the optical light) if it was getting any power via the PS/2 port.. nada :(

I have never had any problems occur from hot-plugging peripherals but.. it could be that I hot-plugged the keyboard. :(

Any suggestions, tips, etc?
Thanks!
 

nbarb99

Senior member
Mar 14, 2003
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Tried a USB mouse, it lit up (optical) but Windows apparently didn't realize it was a mouse because the pointer didn't move. I'd rather use a PS/2 mouse, if possible...
 

hjo3

Diamond Member
May 22, 2003
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PS/2 isn't hot swappable. That means you're not supposed to plug-in/unplug devices while the computer's on. If you do, you risk burning out the port or otherwise damaging your hardware.
 

nbarb99

Senior member
Mar 14, 2003
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I forgot to mention, this mobo is a little different, the mouse connector is PS/2 (via the ATX riser board), but the keyboard connection is AT-style.