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<blockquote data-quote="RobNorthcott" data-source="post: 792225" data-attributes="member: 57999">OK, I completely uninstalled all the drivers for my old Hauppauge tuner and still no luck.&nbsp; Older BGT driver hangs as well.&nbsp; Tried looking at the Windows boot logs but haven't been able to find what the problem is.I've tried the card in my other machine (which is utterly different, Intel-based with Windows 7 64 bit) and it works, so at least that proves the card is OK.&nbsp; But I still don't know if it's the XP drivers or some hardware conflict with my HTPC machine that's the problem.I can't think of another machine with XP and a PCIe slot that I could try it in (loads of XP machines at work, but they're all too old and cheap to have PCIe I think - I'll have a look later).I suppose another option is to install Win7 on my HTPC on a spare drive and see if the BGT drivers will install.&nbsp; If that works I'll have to reinstall properly with Win7, but I'd rather just get it working in XP really (as BG claim the drivers support XP!)GrrrrI'll keep you updated.ANOTHER UPDATE:Sorry about the multiple posts...Getting a bit further looking at the boot logs:Without the BGT driver installed the first line of the bootlog is loading ntkrnlpa.exe, but with the drivers installed it loads ntoskrnl.exe instead (and everything after mup.sys fails).&nbsp; Remove the driver and it goes back to the pa version.&nbsp; Could this be significant?&nbsp; There's only 2GB RAM in that machine, so I don't know why it should need PAE, but it seems to be the only difference.I don't know enough about the workings of the OS and drivers to know if it should matter.&nbsp; Any brainy people on here know anything I should try?&nbsp; What tells the machine whether to load ntkrnlpa or ntoskrnl?</blockquote>

[QUOTE="RobNorthcott, post: 792225, member: 57999"] OK, I completely uninstalled all the drivers for my old Hauppauge tuner and still no luck. Older BGT driver hangs as well. Tried looking at the Windows boot logs but haven't been able to find what the problem is. I've tried the card in my other machine (which is utterly different, Intel-based with Windows 7 64 bit) and it works, so at least that proves the card is OK. But I still don't know if it's the XP drivers or some hardware conflict with my HTPC machine that's the problem. I can't think of another machine with XP and a PCIe slot that I could try it in (loads of XP machines at work, but they're all too old and cheap to have PCIe I think - I'll have a look later). I suppose another option is to install Win7 on my HTPC on a spare drive and see if the BGT drivers will install. If that works I'll have to reinstall properly with Win7, but I'd rather just get it working in XP really (as BG claim the drivers support XP!) Grrrr I'll keep you updated. ANOTHER UPDATE: Sorry about the multiple posts... Getting a bit further looking at the boot logs: Without the BGT driver installed the first line of the bootlog is loading ntkrnlpa.exe, but with the drivers installed it loads ntoskrnl.exe instead (and everything after mup.sys fails). Remove the driver and it goes back to the pa version. Could this be significant? There's only 2GB RAM in that machine, so I don't know why it should need PAE, but it seems to be the only difference. I don't know enough about the workings of the OS and drivers to know if it should matter. Any brainy people on here know anything I should try? What tells the machine whether to load ntkrnlpa or ntoskrnl? [/QUOTE]

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