CPU temps idle at 60 - 70 degrees Celsius (Even after buying a new CPU cooler!)

Is it definitely idle? Does task manager show low CPU usage?

How are you measuring temps exactly??

Most 3rd party software is totally inaccurate on fm2 chipsets.

Download amd overdrive, install & open the CPU status tab.
Let us know the thermal margin shown
http://www.amd.com/en-us/innovations/software-technologies/technologies-gaming/over-drive

And because the term "thermal margin" that Madmatt30 is talking about is probably not ringing a bell with a lot of people...
A nice little post on it
http://www.tomshardware.com/faq/id-2122665/understanding-temperature-amd-cpus-apus.html

Yeah, that sounds like either:
a) Bad sensor, or
b) software not correctly reporting

Idle temp should be closer to 40degC but it varies a lot depending on ambient temp, case cooling, cooler and fan profile setup.

Other:
- ensure fan is spinning
- install motherboard fan control software if possible (may be in bigger software package)

get the latest version of overdrive here:
http://www.amd.com/en-us/innovations/software-technologies/technologies-gaming/over-drive

AMD drivers up to date too?
http://support.amd.com/en-us/download/apu?os=Windows+10+-+64

BIOS of the motherboard up to date? which version is on it now?

check the installation of the cooler again and reapply thermal paste

What motherboard & bios revision??

Cam (if if its the latest one) should have the amd algorithms embedded so it 'should' read temps fairly accurately.

Amd overdrive should not crash out like that though seeing as its designed expressly for amd boards & CPU's.
Try running as administrator??

get into bios and have a look, there should be the bios version
the hardware revision is written on the mainboard itself, left bottom corner like rev. 1.0 or similar

Most likely your temperatures are fine. You'll get nonsense readings from anything but Overdrive. People ask this question multiple times every day, some claiming programs were reading that their CPU was at 130c or above, which is impossible as the CPU would immediately shut itself down from thermal protections being tripped.

Motherboard & BIOS revision can be found in the mainboard tab of cpu-z

http://www.cpuid.com/softwares/cpu-z.html

Either just post the relevant info or take a grab with snipping tool & post to

WWW.postimage.org & paste the link here.

Need motherboard model & revision too mate?

At the minute though I'm not seeing bios version as an issue as 7/7/2014 is 6 months after the release date of your apu.

As others have noted, only AMD Overdrive is accurate for AMD processors.

CAM is somewhat unreliable (I've used it myself) depending on which version you use. At one point it looked like they adjusted for the erratic readings so 60 deg C at idle read 20 deg C idle, but then promptly changed it back to the 60 deg C idle reading. If a sensor accurately measures the change in temperature, then I would have presumed it was possible to adjust the software to report the correct temperature. (This doesn't seem to be the case though.)

However, through much comparison on my own system; 60 deg C idle on CAM isn't too bad. At around 95 deg C, CAM claims overheating while AMD Overdrive has thermal margin of 30 deg C. Assuming such readings are consistent across different processors, I don't think there's anything to worry about.

The problem is that AMD overdrive is crashing the system when running it. Something is wrong, but not sure if it´s software or hardware related.

Update the up to date BIOS for your motherboard. The exact motherboard model name can be read with cpu-z. Don´t flash in windows! use the integrated tool integrated in BIOS

Update your Bios via ez-flash which is integrated in bios itself. Don't flash in Windows!

Check your cooler installation again
Thermal paste applied and not much of it used?

Hey,
I've seen others report the temperature sensors are bad for some AMD processors.

For example: http://www.eteknix.com/complete-amd-kaveri-review-a10-7850k-a10-7700k-a8-7600/16/

"In terms of temperatures with Kaveri it isn’t possible to judge. The temperature readouts on the Kaveri APUs are totally “borked” and the motherboard sensor readouts give ridiculously low temperatures which cannot be accurate... "

*As long as you don't see a BSOD or other signs of data corruption then I wouldn't worry about it. I don't think you should overclock though since it's obviously hard to see what the actual temperatures are. I suppose you could still do a light overclock and leave it there if no crashing. Up to you.

Other:
I also suggest running Memtest86 if you haven't done so (for a full pass), or at the very least use the Windows tool (type in "memory" into search to bring up the Windows Memory Diagnostic. Either way, a full pass takes roughly 30 minutes per 8GB of memory depending on the speed of memory).

Other:
Your next CPU upgrade will require a new motherboard and memory. There's not much you can buy that is worthwhile as an upgrade for your current system.

So you should be looking at either a suitable Intel setup such as the i5-6600K, i7-6700K or later (depending on budget and time of purchase) or possibly a ZEN processor.

I think Zen is coming to 28nm on AM4 motherboards but I'd wait for the 14nm processor (on the same motherboard). That's on an AM4 motherboard using DDR4 system memory (i.e. 2x8GB 2666MHz).

I'm hoping Zen is very competitive for pricing, however unless there is significant SAVINGS to be had on the CPU I'd stick with Intel as their software is more mature in general, though you should INVESTIGATE that later. Remember it's also the CHIPSET and driver support for SATA, USB, network etc.

*I also recommend waiting at least TWO MONTHS after any specific motherboard is made to allow for BIOS updates to sort out various issues. It's very common to see changes, especially on such a new platform.

(For video editing, what I really want is an inexpensive dual-socket motherboard and reasonably priced 8C/16T processor. Currently the cheapest Intel is about $1000USD. Ouch!!

What's really interesting is that a 4-core Intel now can use about HALF the space for the graphics. So it's possible to make an 8-core without graphics for about the same price. So how come an 8-core is $1000? Competition. AMD will not have graphics on the CPU since that's what an APU is. So how much will their 6C/12T and 8C/16T processors cost? Who knows.

I suspect the 8C/12T Zen, 14nm CPU's will cost between $600 and $800USD and the 6C/12T CPU's will cost $300 to $500USD)