How to set +60Hz refresh rate with an Intel CPU?
The Intel i7-4770k only supports up to 60Hz refresh rate since the onboard graphics (Intel HD 4600) only supports that. This is shown in the product specification in the screenshot below:
The product page is here: https://ark.intel.com/content/www/us/en/ark/products/75123/intel-core-i7-4770k-processor-8m-cache-up-to-3-90-ghz.html
So unfortunately, you're stuck at a maximum of 60Hz using the onboard graphics.
That's all it can do, 60Hz is the maximum refresh rate the on-chip GPU can achieve.
Ref: Intel Ark - Intel® Core™ i7-4770K Processor