splash screen reboot loop

[Camino377]

Gigabyte B85 mhd3
i5 4670
4GB DDR3 1866 Kingston HyperX
1TB WD Blue 7200rpm SATA HDD
450 watt psu
Win 7 64 bit

In advance, I apologize for any grammar mistakes as I'm on a phone.
I just finished a new build, was able to install windows just fine, but once it reaches desktop after the installation, it automatically shuts itself down after about 3 seconds then starts a reboot loop at the splash screen. I.e. it gets to the splash screen, goes black after about 1 secound, and repeats. I checked the bios and the cpu wasn't supported by the current version, so I flashed the bios to the newest version which does. Still nothing. I tried swapping memory to a known good stick, and still nothing, as well as trying another slot. The PSU seems to be fine as well.
The only thing I can think of is potentially an incompatibility issue with perhaps the memory or the HDD as I have had this issue with gigabyte mobo's in the past. Or could it be some clocking issue in the BIOS?

 

[RaDiKaL_]

So initially the mobo BIOS didn't support the CPU... and you installed the OS at that time right?

It's possible that Windows installed a wrong driver for the CPU due to the lack of support from the BIOS version, I'd make another fresh install now that you have the right BIOS for it and see if the problem persist.

 

[Rookie_MIB]

^^ what he said. I know that many times I've done some mobo swaps and while I always -try- to see if the computer will boot with the previous install, more often than not you need to do a fresh re-install.

 

[Camino377]

So initially the mobo BIOS didn't support the CPU... and you installed the OS at that time right?

It's possible that Windows installed a wrong driver for the CPU due to the lack of support from the BIOS version, I'd make another fresh install now that you have the right BIOS for it and see if the problem persist.

^^ what he said. I know that many times I've done some mobo swaps and while I always -try- to see if the computer will boot with the previous install, more often than not you need to do a fresh re-install.

No go for a fresh install, any other ideas? Could it possibly be a short causing it? Despite the fact windows installs fine?

 

[Rookie_MIB]

Something isn't working right. What you should probably do:

1) Remove anything extraneous in the system. Graphics cards, etc.
2) On the mobo bios, reset everything (load default settings), then disable things you don't need (com/lpt etc). Do not overclock.
3) Install the OS

See what happens. If this doesn't work, you have a hardware problem (mobo most likely). Could also be a ram problem, download and run a mem tester (memtest86) through several loops.