PC shutting down completely soon after logging into Windows

theforce · 20 Jul 2013 at 17:29

The PC was shutting down completely soon after logging into windows. I could either hit "My computer" or "Windows Update" and it would simply shut down. It's not a heat issue as far as l know. The only change was that l installed 2 SSD's on the machine. A Samsung 840 and a Samsung 840 Pro.

The weird part is that while the vanilla 840 was the boot drive in the bios the 840 Pro was shown as the main drive. I thought that if such a thing occurred the bios would simply throw an error that it can't find Windows.

I hope it's not a PSU issue. Hardware monitor shows the +12V rail around 12.5V. PSU is a Corsair 750W.

This is the first time l had such an issue. Anyone that can shed some light into this?

snips86x · 20 Jul 2013 at 19:08

It's funny how most of the issue around builds occur are using Corsair PSU's.

Do you have a multi-meter? Another PSU?

mickyflinn · 20 Jul 2013 at 19:14

Did you set the sata mode to AHCI in the bios when you installed the ssd's ?

theforce · 20 Jul 2013 at 19:18

I have another PSU but it's identical to the one in his PC. I used driver genius to update some drivers so it might be one of the damned drivers doing this or the damned motherboard.

theforce · 22 Jul 2013 at 01:55

mickyflinn said:
Did you set the sata mode to AHCI in the bios when you installed the ssd's ?

Yes, l have changed the setting to AHCI for the marvell controller the two SSDs reside one.

From what l have found, disabling the Turbo function for the i7 930 makes the problem to go away. I have also run MemTest 86+ for around 7 hours and it didn't find any errors.

It's weird that the Turbo function should cause the PC to shut down like that. I have updated to the latest beta bios for the motherboard but it still shuts down if l enable the turbo function.

The weird part is that this machine used to house a GTX285 and now the ATI 7770 should put less load on the power supply.

mattdunnapoo · 23 Jul 2013 at 10:28

theforce said:
Yes, l have changed the setting to AHCI for the marvell controller the two SSDs reside one.

From what l have found, disabling the Turbo function for the i7 930 makes the problem to go away. I have also run MemTest 86+ for around 7 hours and it didn't find any errors.

It's weird that the Turbo function should cause the PC to shut down like that. I have updated to the latest beta bios for the motherboard but it still shuts down if l enable the turbo function.

The weird part is that this machine used to house a GTX285 and now the ATI 7770 should put less load on the power supply.

did you change it to ahci after you installed windows? as it doesnt like that at all , as sometimes when i go from my o/c profile to my stock , it changes mine ahci to ide and doesn't load windows as well as changing my main boot drive.

theforce · 23 Jul 2013 at 10:42

mattdunnapoo said:
did you change it to ahci after you installed windows? as it doesnt like that at all , as sometimes when i go from my o/c profile to my stock , it changes mine ahci to ide and doesn't load windows as well as changing my main boot drive.

Well, since the current motherboard has two different colours for SATA ports and l thought that the Marvell controller had four ports instead of the two. I changed the correct controller to AHCI and the reinstalled Win7 on the Samsung 840.

The problem is that when Turbo is enabled windows shuts down even at idle while under stress it's stable. Weird thing is that the Turbo used to work fine before I installed the two Samsungs on the Marvell controller. I also update the firmwire of the vanilla 840 but l haven't tried enabling the Turbo to check the results.