Hi all, I'm a newbie to ESET and my friend an I are experiencing this problem. Got a friend who just "upgraded" to XP 64bit. Yesterday we installed a new Intel E8400 CPU on his motherboard, and purchased a subscription to ESET Smart Security v3.0.650.0, antivirus/firewall/antispam suite. His specs are: eVGA NF680i mobo, E8400, 4Gb PC2 6400 RAM, 8800GT Superclocked vid card all on Air and Windows XP x64. Problem is this, after installing the Smart Security suite, he ran Ntune to "fine tune" his Nvidia system. On startup Ntune gave a BSOD, this has never happened before so we uninstalled Ntune and reinstalled. On startup Ntune opened and he could do what he wanted, but after a reboot on opening Ntune we get the BSOD again. A reinstall of Ntune works every time, but opening Ntune after a reboot gets a BSOD. Message on the BSOD says the usual stuff with these errors...... 0x0000003B (0X00000000C0000096, 0xFFFFFADF8E233AB7, 0xFFFFFADF8C5CB080,0x0000000000000000 nvoclk64.sys - Address FFFFFADF8E233AB7 base at FFFFFADF8E232000 Datestamp 46de13d9 Ideas or suggestions??