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Windows 7: PC turns off suddenly when booting

12 Sep 2011   #11

Windows 7 Ultimate x64


That was really informative friend,
There's already a power switch on my mobo, and powering with it makes no difference, therefore the problem isn't there.
No POST beep here, however it shuts before anything appears on my screen.
Just note that I already updated my BIOS but nothing changed.

Well, logically it seems it's a PSU/Power Problem, anyway I'm gonna try later to boot without the GTX just to be sure.


I totally agree, I thought TT were Reliable and i needn't more than 450W.

My System SpecsSystem Spec
12 Sep 2011   #12

Linux (Mint is primary) / XP, Win7 Home / Win7 Pro, Ultimate / Win8.1 / Win10 archived VM

Before you spend money and tear into your rig, this has come up before - with some motherboards this is NORMAL (including mine).

One key you posted is "sometimes" you have a power strip on the PC? Do you sometimes turn off the power on the power supply?

I'll bet the Start-Stop-Restart happens when the power has been turned OFF, as in power strip switch turned off - then you turn power on and then turn computer does the start-off-restart. BUT when you turn off the PC when exiting Windows but leave power to the PC turned ON, it fires right up.

Try it and see if that happens. If so, it is normal.

My System SpecsSystem Spec
12 Sep 2011   #13

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1

That reminds me...

You should also check your CMOS battery. When they get weak or go dead all kinds of strange boot problems can happen.

You can test with a multimeter for a solid 3.3v, or just try a replacement. They are relatively cheap as compared to a power supply.
My System SpecsSystem Spec

12 Sep 2011   #14

Windows 10 Pro. EFI boot partition, full EFI boot

I would peruse the hardwaresecrets site. Their reviews of several Thermaltake power supplies conclude they stick a higher rating on the supply than it can deliver. For example:

Thermaltake TR2 RX 750 W Power Supply Review | Hardware Secrets

This may not be true for your specific model - they haven't reviewed it, but it seems to be for several of the TT supplies they have reviewed.
My System SpecsSystem Spec
12 Sep 2011   #15

Windows 7 Home Premium 32 bit

The OP may also check all cables and connections inside. SATA cables getting loose over a period of time can cause boot problems.
My System SpecsSystem Spec
13 Sep 2011   #16
Layback Bear

Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64

essenbe good post. That said, every thing in the computer starts with a great power supply. Trying to trouble shoot a computer with a maybe power supply is a waste of time......
My System SpecsSystem Spec
13 Sep 2011   #17
Layback Bear

Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64

Cmos battery is another great idea. Thanks TVeblen.Test na they are cheep just put one in.I change mine once a year. Their may be more problems; but lets get the basics before going farther is my thoughts.
My System SpecsSystem Spec
13 Sep 2011   #18

Windows 7 Ultimate x64

Here's some updates;
Today, booted 4 times without the GTX and everything went okay.
even though i replugged the GTX and PC booted normally, well the problem is not continuous as I stated so that didn't help.

Actually, I tried that yesterday but no luck.

My Mobo is still new anyway I'll try that later.

Many thanks everyone.
My System SpecsSystem Spec

 PC turns off suddenly when booting

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