Hi, from a newbie. Have had probs with XP over the last 3 weeks. Running fine for 3/4's of the year. Now, it seems quite randomly, I get blue screen with STOP and messages like -IRQL_NOT_LESS_OR_EQUAL with STOP and another time UNMOUNTABLE_BOOT_VOLUME STOP. Unfortunately, they mean nothing to me. I reboot in safe mode and all recovers. I get errors like STOP:0X00000008E(0X0000005XBF87CA31,0XF12AB120,0X00000000) I have been thru Support pages of MS but still after some advice - if anyone can offer any help, I would appreciate it. I have updated Drivers on MX400 Video card and 3COM network card.