How much can you sell your 7600 for? If you can sell it, add 20-30 and buy the 7700K do it, if it's more it's not worth it.
A 6700K is s good option too, but I believe those hold the prices too.
I asked about the multimeter because I thought your CMOS battery might be going bad, I've seen (and experienced) am4 boards experience such issues when the battery dies.
Do check with Hard Disk Sentinel.
Look at these headphones:
- Sennheiser HD 560S
- Fiio JT1
- Beyerdynamic DT 990 80 Ohm
And these AMP&DAC dongles:
- Akliam PD4
- Truthear Shio
- Moondrop Dawn Pro
And top it all out with some decent IEM-s for gaming when you want to avoid gamer hair:
- Simgot EM6L
- Truthear Zero
- Truthear Nova
- Moondrop Lan
- QKZ x HBB
As for the microphone:
- BM700 or BM800 + a Phantom power
- a Fiio or similar desk mic
Monitor plugged into the GPU and not the motherboard?
Latest GPU drivers and Chipset drivers? Latest Bios?
Can you post a 3DMark score and a Cinebench 2024 score?
5700X3D or 5800X3D
Radeon 7900XT or RTX 4070 Ti Super
A 800-1000W Quality PSU
Keep the rest, and you don't actually need anything more. Maybe upgrading your peripherals, audio, TV?
I would avoid a Gigabyte GPU, their recent generations have issues with a weak PCB near the PCI-E socket, they tend to develop cracks and Gigabyte does not accept those as valid warranty claims.