Before=stable@aircooling - now=unstable@watercooling

[Utnorris]

$5 says it is the PSU. I had a similiar issue using a OCZ Gamestream 700 watt PSU, great PSU, but I was having weird instability issues. Swapped out for a Gigabyte Odin 800 watt PSU and the instability issues went away. I swapped out my 2 HD4850's for an HD4870x2 and started having problems with the new card. Connected it to it's own PSU and sure enough the issues went away. This was of course after ruling out other possible problems, such as drivers, etc. I have a lot of components connected and I am pretty sure I am pushing the limit of these PSU's. I will probably eventually upgrade to a 1KW PSU, but that's for later.

[funk32]

$5 says it is the PSU. I had a similiar issue using a OCZ Gamestream 700 watt PSU, great PSU, but I was having weird instability issues. Swapped out for a Gigabyte Odin 800 watt PSU and the instability issues went away. I swapped out my 2 HD4850's for an HD4870x2 and started having problems with the new card. Connected it to it's own PSU and sure enough the issues went away. This was of course after ruling out other possible problems, such as drivers, etc. I have a lot of components connected and I am pretty sure I am pushing the limit of these PSU's. I will probably eventually upgrade to a 1KW PSU, but that's for later.

i would also go with it being a power problem.

[cobra_kai]

i would also go with it being a power problem.

It's a 1200W power supply from a good company, I doubt that it is a problem with the PS

[Spankyfart]

It's a 1200W power supply from a good company, I doubt that it is a problem with the PS

I didn't even see he had a 1200w, still doesn't mean his 12v rail can't be borked though.
Although it's highly doubtful, I would go with a reinstall of windows.
Just make a ghost of his OS in the state it is now, format and reinstall.
If it isn't working, he can always put back the image and try to figure out what really the problem is.

[njl]

I didn't even see he had a 1200w, still doesn't mean his 12v rail can't be borked though.
Although it's highly doubtful, I would go with a reinstall of windows.
Just make a ghost of his OS in the state it is now, format and reinstall.
If it isn't working, he can always put back the image and try to figure out what really the problem is.

I don't see what good a reinstall would do me.

I can boot perfectly at stock settings, so why would a reinstall help me boot at OC'ed settings?

I stated in the OP that the machine always restarts *BEFORE* the machine begins to boot windows - sometimes right after checking memory, sometimes during HD detection, and sometimes when it's just beginning to boot windows.

Sometimes I can get into BIOS and it restarts there!

Again - I seriously doubt a reinstall will help this at all.

[Utnorris]

It's a 1200W power supply from a good company, I doubt that it is a problem with the PS

Well the original post stated 700 watt, not 1200. If he is running a 12oo watt, then yeah could be drivers.

Edit: Now I see where the 12oo watt is in the upgrade section. My bad.

[Spankyfart]

Looks like either your windows is the culprit and got bodged somewhere along the upgrade.
Or as stated before it's the PSU that cannot handle the new load.
Be it your rails aren't steady/powerfull enough, or you have reached the max to power your bits.

Pretty sure it's one of these things or both.