Help! Recent upgrade to Windows 8, big problem has ensued.

MrNimbos

Honorable
Aug 19, 2013
3
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10,510
Hello, I have recently upgraded to Windows 8 Pro from Windows 7 Ultimate. Since upgrading, my computer has been prone to completely random lock-ups/hangs/freezes. The freeze is nothing like I've seen before, the video output of the computer completely jams and becomes a completely frozen image. I am only able to get the system to respond by hard-resetting. Occasionally the freeze happens with a buzzing coming out of my TV's speakers (video and audio are all output through a HDMI cable), so could this mean it is something to do with my GPU? My computer is a fairly new custom build at just over a year old.

When I check Window's event log viewer the only thing that looks remotely of importance is 8 Information/Error combinations (8-Core Cpu) stating "Performance power management features on processor 0 in group 0 are disabled due to a firmware problem. Check with the computer manufacturer for updated firmware." as an "Error" and "Processor 0 in group 0 exposes the following power management capabilities:

Idle state type: ACPI Idle (C) States (2 state(s))

Performance state type: None
Nominal Frequency (MHz): 2813
Maximum performance percentage: 100
Minimum performance percentage: 100" as an "Information".

Can anyone please help me with this? As you can imagine, it's highly annoying.

Computer specifications are as follows;
AMD FX-8120 8-Core CPU 3.1GHz (running @ 2.8 GHz, 4 cores? :S) being cooled by a Zalman CNP510X,
MSI Radeon 7850 Twin Frozr 2GD5 graphics card,
Gigabyte GA-M68MT-S2P motherboard,
Seagate Barracude 2TB HDD,
OCZ 550W PSU.

According to HWMonitor, components are running at the following temperatures roughly (no load);

CPU - 10 °C
GPU - 30 °C
HDD - 25 °C

So I'd assume that temperature is not a problem? As those seem fairly decent temperatures to me. I'm yet to do a Prime95 test but if that is deemed necessary then I'd be willing to do the test.

Some other points: Windows Updates are up-to-date and all component connections seem solid and well-seated. Also W8 was installed yesterday afternoon, did not have any problems on the previously installed W7.

Many thanks to anyone who replies!