I have been getting intermittent crashes on my WIndows XP SP2 laptop. I have been having these for a couple of months, but they are increasing in frequency. I cannot trace the start to any new hardware or software. I ran MEMTEST for 18 hours and have not found any errors. I updated the BIOS to the latest, but that did not help. I have scanned with avast and with Malwarebytes and don't see any viruses. I used avast to clean the registry - only found references to deleted software. Last crash System Error - Category (102) Event ID 1003 Error code 100000c5, parameter1 00000004, parameter2 00000002, parameter3 00000001, parameter4 8054afd2 I have also had 1000050 and 100008e crashes. The latest minidump is attached. Any help is very welcome. Thanks.