Yesterday my PC (running XP Pro) couldn't even get to the XP loading screen (prior to the Logon screen - with the blue moving bar). I tried safe mode, last known good config, etc.....ALL boot options and nothing worked. I'd just installed the Radium MP3 codec mentioned on the news at this site on wednesday. As a last resort I pulled out my sound card and rebooted....which worked. I then tried putting it back in and rebooting, which worked too. I dismissed this as something weird to forget about.....but now it's done it again and I've had to take the sound card out again to reach windows! Has anyone any idea whatsoever why this is happening? I'd just buy a new Sound card - as I intend to soon anyway - but if it's actually a windows or (god I hope not) a motherboard problem then I'd like to know....... Thanks PS - I have an Abit SA6R motherboard if thats any use...and a pretty old Creative SB64 soundcard.