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Computer Shuts Down automatically at night!

Last response: in CPUs
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January 17, 2010 11:19:28 PM

I dont know whats the problem, i have Windows 7 and i have checked the Power Options and i have disabled going to hibernate @ sleep mode.

I have geforce 9400GT so no reason of overheating, idk whats the problem, their are no auto-shutdown, no viruses (scanned through Bitdefender 2010)

It is happening from past 5 days before it, it did not happen nytime.

In the morning when i use it for 4-5 hrs their is no problem of shutdown, happens only during night, when i go to sleep keeping my PC on.
a c 172 à CPUs
January 17, 2010 11:25:06 PM

That's not a bug; it's a feature. :) 

If it's not software, it's got to be hardware. What kind of PSU?
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January 18, 2010 1:07:49 AM

hmm 300W PSU, i guess its not a problem because in morning hrs it does not shutdown...my PC is on for 5-6 hrs in morning but no problem.

I think it shuts downs when PC is in idle but in power options i have disabled going to sleep or hibernate.
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January 18, 2010 1:52:30 AM

300W is probably not enough, even with a 9400GT.

Care to post any other specs or brand of PSU?
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January 18, 2010 2:01:07 AM

Despite it being a hardware problem as suspected would it be helpful to restore the system to a date just before this started occurring? If nothing else it might help rule out possibilities and support others.

I wish I could be of more help but I had a heck of a time with trying to allow my old vista system to hibernate upon command. So I had a similarly frustrating experience but under opposite end goals. It was a lot of reading among forums and how tos on Google that got it fixed for me.
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January 18, 2010 3:48:24 AM

if it was a PSU problem, then my PC would shutdown even during daytime when i use it cotinue for 5-6 hrs.

So i think their is a problem were it shuts down when it goes in idle mode(when i dont use it for 7-8 hrs)..i think
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January 18, 2010 3:49:36 AM

i will try to use XP for a day...hope for the best
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!