Desktop reboots continuously without KVM plugged in

 I have an AMD64 3000 in a Gigabyte K8NS Ultra 939, nVidia FX5900, 500W PSU.  I have it hooked up to a KVM.  Everything boots just fine when KVM plugged in.  I installed a seperate mouse and keyboard for better response times for gaming.  The following occurs-
(+ means as a seperate component) (KVM = Keyboard/Video/Mouse device)

--Plugged In--                             --Effect--
KVM                                          Normal operation
KVM +Mouse +KB                       Normal Operation
V +Mouse +KB                           Reboots continously
KV +Mouse                                Reboots continously
VM +keyboard                           Reboots continously
+Video +Mouse +Keyboard         Reboots continously

  I can not see how plugging in a mouse and keyboard instead of the KVM would affect the booting of my system.  
  Problem is that this machine is my LAN party machine and I will need to pull it from it's KVM setup when I go to another location.  I did replace the FX5900 with a Radeon 9600 when I thought the Video card had died at a LAN party and I was able to run normally.  So it would seem to have something to do with the combination of the KVM(I've tried 2 different KVM's) and the FX5900 (althoughit worked just fine in the past before that video card swap).
  Any idea of why this would be happening?

-AP
AJPhelpsAsked:
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rindiCommented:
Disable automatic reboot in control panel, System, advanced tab, startup and recovery. Next time the system shoud just bluescreen and not reboot. Tell us what stop error you get, also, if there is a filename in the bluescreen, tell us that.

A further question, the extra mouse and keyboard you attach, are they USB or with PS2 type connectors?
AJPhelpsAuthor Commented:
 It doesn't even get that far.  The first thing that shows up is the bios version, etc for the FX5900.  It then switches to the initial bios for the motherboard where it identifies the processor and the bios manufacturer.  It is at that time that the computer reboots.  While I did disable the auto reboot in windows, the moment I turned off and removed the KVM Keyboard and Mouse, it began the endless rebooting.

The KVM mouse and keyboard are the PS2 kind, the additional mouse and keyboard I have attached are USB although I have tried the adapters to make them PS2.  Neither plugging them in via PS2 or USB seems to make a difference.

-AP
rindiCommented:
Try using just one of these at a time (only the keyboard, then only the mouse). Possibly try another set of keyboard/mouse.
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AJPhelpsAuthor Commented:
 I plugged in a regular PS2 connected mouse and it booted correctly.  I'm gonna dig out an old PS2 keyboard and see if it clears this test.  If this works, it would seem to solve my LAN party portability question as taking an extra KB and Mouse is possible while dragging the KVM is not. The BIOS is set to allow USB KB and USB mouse, so i'm still a bit stumped as to why the computer is refusing to boot without ACTUAL PS2 connectors plugged in!! (assuming the extra KB test works works).  IF it does you'll get some points rindi but if an answer to WHY comes around I can award them all.

Thanks

-AP
rindiCommented:
It looks like the keyboard or mouse you tried it with is "kapput".
AJPhelpsAuthor Commented:
 Actually no, the mouse and keyboard work just fine.  It would seem that I just have to have a 2nd set of actual PS2 connected KB and Mouse in order foe the machine to boot properly.  Odd.  Final test this weekend and then, if successful, I'll put this behins me.

-AP
rindiCommented:
Maybe the USB port is fried or mechanically bad. Have you taken a close look at it? I've often seen the middle plastik part breaking, which caused the pins not to be properly aligned or even pushed back. If you connect a device in to such a port, it is possible they shorten the contacts and this would cause reboots.

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AJPhelpsAuthor Commented:
Fixed problem.  Turns out the back plate for the case had a metal piece that I suppose I had bent back a bit to make sure that the mouse plug would stick through properly.  It was touching a part of the motheboard and creating a short.  Points to you rindi for your help.

-AP
rindiCommented:
No problem, thanks.
compfixer101Commented:
This question has been classified abandoned. I will make a recommendation to the moderators on its resolution in a week or two. I appreciate any comments that would help me to make a recommendation.

Unless it is clear to me that the question has been answered I will recommend delete. It is possible that a Grade less than A will be given if no expert makes a case for an A grade. It is assumed that any participant not responding to this request is no longer interested in its final disposition.

If the user does not know how to close the question, the options are here:
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compfixer101
EE Cleanup Volunteer
compfixer101Commented:
No comment has been added to this question in more than 21 days, so it is now classified as abandoned..
I will leave the following recommendation for this question in the Cleanup topic area:
Accept rindi

Any objections should be posted here in the next 4 days. After that time, the question will be closed.

compfixer101
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