CF-30 - Win10 Driver Issues

Hey there everyone!

Recently a coworker and myself picked up a couple really awesome Toughbooks. Well, long story short, unlike mine, his turned out to be a CF-30 MK1. (I have no idea which exact model, as the sticker specifying such is missing from the bottom of the system, and it was refurbished). I ended up upgrading mine to Windows 10 x64, which works absolutely wonderfully on my CF-30 MK3. I didn't have to update any drivers and it was completely ready to go with no issues whatsoever.

Now, my coworker's CF-30 MK1 ended up upgrading to Windows 10 x86 without warning from Windows 7 x86 the other day. (Thanks Microsoft). It worked beautifully in Windows 7, but with Windows 10 he is experiencing some very extreme lockups while doing basic tasks. From the research I've done on it, it does not appear to be a memory issue on his system, but his CPU is sitting at a constant 99% usage. I was able to resolve the worst of it by reinstalling his wireless card's driver with an older version, (as that was causing several related services to send the processor's usage through the roof), but I'm unable to identify the remaining causes. I would hate to force him to go back to Windows 7 and risk having to reinstall all of the same drivers all over again, so I was wondering if anyone had any ideas here.

Everything in Device Manager appears to be fine, and no other processes are using abnormally-high processing time. He also has barely anything installed. (I believe just MS Office 2010 Student and Windows Live Mail 2012 right now, which were installed via Windows 7). The OS is also completely updated. If it helps, the system was upgraded to include the touchscreen monitor on what appears to be a non-touchscreen model, (same as mine), however that has not had any visible problems. Windows is also fully activated, and I can rule out any drive or other hardware issues. (My best guess is this is going to be a driver-based nightmare). His function keys are also not working, although I'm doubting that is the cause of the lockups.

(For what it is worth, Windows 10 x64 is freaking awesome on my CF-30 MK3!)

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CF-30 - Win10 Driver Issues