Getting system interrupts under control

[Ben Cole]

I have a Lenovo Thinkpad 10 which although it has issues, I do like.
I also like Windows 10 but it has big problems on the Thinkpad.

System interrupts usually hog 15-20% of CPU resources, which of course seriously hampers the use of the tablet.

From research it would seem this issue is usually caused by a rogue driver. So after failing to track it down I did a clean install using Lenovo's drivers. Things seemed great at first but it soon turned bad.

I then did the same with mostly just Windows update drivers but the same happened again.

Any tips before I try rolling back to Windows 8 or 7?

Thanks.

 

[Ben Cole]

Have you folllowed instructions in guides like this
using windows performance analysis toolkit - that nailed it for me to get an audio card running.

Thanks but that guide doesn't appear to work for W10. I did run windows assessment tool though and no problem was found with drivers?!?!?!?!?

 

[Ben Cole]

The assessment tool runs a driver check. I don't really know what that does but it didn't come back with anything.

This thing has a qwerty keyboard and mousepad so its ok for self diagnosis.

Thanks for your input, its much appreciated. I think I'm just going to try Win 8 as I cant seem install Win 7.

 

[Ben Cole]

Think I've got this solved.

Just in case somebody does a search and ends up here. The answer for me was disabling Windows fast boot. The hibernation aspect of fast boot mode obviously played havoc with reloading drivers. Resume from hibernate would also result in crazy system interrupts.

This has done my head in for weeks and weeks. So happy to get it sorted, sleep efficiency seems to have improved too, from just under 2% drain per hour to 0.5% per hour.