I have a problem that started after I installed a new DDR 400  512 memory..(maybe that but maybe a coincidence)

After the computer is left open all night, it bicomes extremely slow...all is in slow motion, after a reboot all is ok till the next time.

My board is a 266 but the dealer told me that it will work fine just the same, is this true?

Im running :

Ecs K7S5A PRO (chipset SiS 735)

AMD 1300 ghz

DDR 400 512 memory

asus V7100 ge force 2  MX-400 Video

Windows XP Pro

 

Thanks