Hi, my sx280 keeps switching itself off.  I replaced the cmos battery about 2 weeks ago because a message kept appearing 'system battery low', and the computer was running fine up on till now.  Now it turns on and switchs off by itself, it dont even load up to the windows screen.  I read alot of the forums, and checked a few things.  I checked the capacitors for any buldges or leaks they seem to be fine.  I reset the cmos, and on the third attempt it made a difference, and loaded upto the windows screen, i used the computer for two hours with no problem.  The following day problem re-occures, tried reseting cmos no luk. computer now loads up to the blue windows screen (xp) and switches off by itself.  Can anyone help me plzzzzzzzzzzz

SX280

2.8GHZ

768MB RAM

WINDOWS XP

BIOS A08