Mouse causes PC to reboot

Could be a weak powersupply, that would probably not get caught in a BSOD, so also try changing that.

check the temperatures of cpu and disk; use speedfan : www.almico.com/speedfan.php
and here a lsit of max temps :  http://www.heatsink-guide.com/content.php?content=maxtemp.shtml

Thank you LuCF,
I was not aware you could do that to the startup routine to get error codes. I will give all of this a shot on Monday and post what happens.

There could be also another reason ,but let's furstly stick with the LucF's suggetion, cuz this will definitely give more light on the problem;
moer over you can check out the event-ids in the event viewer,perhaps this will also help,just make a filtering on teh application and system logs to show only errors and faulty entries...
check out the event-ids on the Microsoft's Knowledge base or just post them here;the best by the event log observing is teh fact that you can catch the error, generated by a special time , so as you know that the problem happened at a specific time you can fastly parse the event-log.
Also it could be tahat the MS Outlook is been vulnerabled, as there were many security notifications on CERT.org about leaks on the MS office the former weeks:
-install Thunderbird  or better Mozilla Suite and use Mozilla Mail or even Netscape Mail as a substitute for the MS Outlook -they are even better;
know that the version of Thunderbird 1.5.0.5(the most recent one) is also vulnerable(as cert.org) so use the other two alternatives;
furthurmore, scan the pc with your Anti-virus scanner ,but check out the security settings of the engine:enable intensive scanning and to prove all files on max depth search;
check out for spyware: use Spysweeper(in diagnostic mode/windows is in safe mode!),ad-aware(play wit the seurity setting to find the appropriate level for you),Spybot S&D(enable advanced mode and enable also beta definition files updates then do the check!)
check out the registries with :
-CCleaner and
-TuneUp Utilities 2006
do a registry cleaning and perhaps registry defragmenting,perhaps ther could be faulty entries in the registries, which lead to this problem;
do a registry BACKUP , before doing any changes to your system settings.

cu

I have changed the starup and recovery settings as suggested by LuCF but it is not giving a BSOD, it is just rebooting.
I am attempting now to find another power supply to change that out even though it is brand new machine.
Nat

nbroughton,

If it's just rebooting without showing a BSOD means that it's not Windows itself which is crashing the computer (which is a good sign as now you can be sure it's hardware related instead of software)
Indeed now take a look at the CPU temperature as mentioned at http:#17207117 as it could be the BIOS is rebooting the computer to prevent overheating.
Another option is indeed mention by rindi at http:#17206986 that it's the PSU.

If the CPU temperature looks fine (e.g. anything under 50 degrees centigrade is very normal) you might indeed be looking at a broken PSU in which case you can test it by just replacing it.

LucF

I swapped the power supply with another similar unit. Neither one has a problem now. I suspect a weak power supply. Thansk for all the input.

Glad to help.
Although, it seems like http:#17206986 (from rindi) is the comment you should have accepted as the "Accepted answer" instead of mine.
If you want, I can notify a Moderator so you can re-award the points.

LucF

HE may have had the correct answer but you sparked my thought process that put me onto where to go to find the answer to get it working again.