maharlikans
There seems to be two issues in the crashes in December (but this problem goes back to May) with perhaps one cause. The long power downs are related to USBHUB.SYS, The others (mostly PCI.SYS) are probably related to your HDAUDIO.SYS driver (2+ years old). The one thing I would do first is to remove and replace your Avast. Its just a gut feeling but With as many odd crashes as you have its an easy first step to do
Avast can be a contributing cause of BSOD'S . Please remove and replace with Microsoft Security Essentials AT LEAST TO TEST
http://files.avast.com/files/eng/aswclear5.exe
Microsoft Security Essentials - Microsoft Windows
I would then update the HDaudio driver. If the crashes still continue please run this and report back the sleep states supported.
Start>search>cmd>right clcik and run as admin> powercfg -a
Since your Tablets drivers are also ancient and in the USB bus I would make sure I updated them as well. To test if it is involved you can always remove the tablet to see if the situation changes.
What devices are on the USB bus?
I am assuming there is no overclock (if you dont know what it means you probably arent)
BugCheck 9F, {3, fffffa8006cb58c0, fffff80000ba2748, fffffa80075e5050}
Probably caused by : ACPI.sys
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BugCheck 9F, {3, fffffa800a88f060, fffff8000456c748, fffffa800c7998d0}
Probably caused by : usbhub.sys
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BugCheck 9F, {3, fffffa8006cbda10, fffff80000ba2748, fffffa8007797ad0}
Probably caused by : pci.sys
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BugCheck 9F, {3, fffffa800aed6060, fffff80000ba2748, fffffa800c490c10}
Probably caused by : usbhub.sys
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BugCheck A, {0, 2, 0, fffff800030d88c7}
Probably caused by : hardware ( Npfs!NpFsdWrite+76 )
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BugCheck 9F, {3, fffffa800aba0060, fffff80000ba2748, fffffa80072f2ab0}
Probably caused by : usbhub.sys