BSOD - multi errors

Hi,

I have had this anually every summer now for the last three years, but it has always been sorted by updating my VIA chipset drivers. However this year, this has had no effect. The errors I am getting (variable on start up) are

0X0000007E
0X0000007F
0X0000000A
0X000000D1 - linked to USBPORT.SYS

The most prevelent however is

0X0000008E - linked differently to SYMIDSCO.SYS, WIN32K.SYS, GBFSHOOK.SYS and FLTMGR.SYS

It is driving me nuts, as can take between 4 and 6 reboots to get teh system runnig normally, any help greatly appreciated!

Thanks

Wezza