MS-6309 strange behavior!?

[recaper]

Hi,
I own an MSI 6309 board that started to act strange. It would not boot Win XP nor W2K however it will run 98 with no apperant problems.
In the XP and W2K it always reboots itself when it gets to the welcom screen with the progress bar.
It will even reboot at the same point when trying to install XP and W2k and even if I try to run ERD 2002/2003 from CD.
I have an identical second board and have verified that all components are O.K
On the board there are 5 6.3v 2700uf capcitors 3 of them have those swelling tops but none are cracked or leaking.
All other capacitors are of lower spec. and seem good.

What do you think? Do I have the plague? Should I go ahead and replace the swelly caps?

Thanks

Gilli