Gigabyte Bios Configuration Issue

[haygij]

Hello all!

My specs:
Motherboard: GA-H97-D3H (rev 1.0)
Processor: 4790K
Ram: HyperX (2x8gb)
SSD: Samsung EVO 850 250GB
OS: Win 10 Pro (licensed)

After updating my BIOS (from F3 to F7 - latest), the PC won't boot into any OS on any Media unless I disable C3/C6/C7 states, from what I have read, those are cache states of the processor.
By disabling those states, PC will boot fine and work well until gaming or a bit heavy use which causes the PC to freeze (sometimes it shows a blue screen saying "whea uncorrectable error").

PC freeze after a minute or 2 also while running "stress cache" with AIDA64 or a blend test Prime95.
Temperatures look good.

On F3 the PC was working fine without problems, was a bad decision to update the BIOS.

Tried to run the pc with only mobo + processor + ram + ssd + psu, nothing else attached.

Tried another:
PSU
RAM sticks
SSD for OS
Monitor
Mouse and Keyboard

Please help =]

[keskparane]

Clear CMOS.

[haygij]

5 minutes ago, keskparane said:

Clear CMOS.

Tried, no help, both jumper and battery.
Also tried going to F6 from F7 and back since there was no change.

[keskparane]

Actually I didn't really know anything about C states and was just assuming you were trying to implement something that would work. Do either of those states actually do anything for you?