Post the STOP error code from the Blue Screens.

That will help a lot in our assisting you

Hi

As requested here are the codes

BCP4 : 00000000     OSVer : 5_1_2600     SP : 2_0     Product : 768_1    

Thanks

DB

Hi

here is some more info on pc configuration as well

D05502 DIMENSION 5000
DIMENSION 5000 P4 PROCESSOR 540 WITH HT
MEMORY DUAL-CHANNEL 1024MB (2X512) 400MH
160GB SATA (7200RPM) HARD DRIVE
48 X CDRW/DVD COMBO
FP/MG - UK/IRISH - 17IN (E173FP TCO99) V
UK MODEM INTERNAL V.92 PCI (DATA, FAX) W
ENGLISH GENUINE WINDOWS XP HOME SP2
Integrated graphics card

microsoft optical wireless mouse and multimedia keyboard.

Booting into the safe mode is the 1st thing I'd try

Hi

Thanks for your suggestion....why safe mode?

This is intermittant problem....does not happen every time, so I will start pc...blue screen and then start again and its fine.

Thanks

DB