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After installed vista have to use the power switch to turn the pc on

Last response: in Windows Vista
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Hi all i ran into a really weird problem after installing windows vista from windows xp. I never had problem with turning the pc on when i was running xp but now on vista after i turned the pc off i can't turn it back on unless i hit the power switch off and back on then the front power button then it'll turn on. I've been researching online to fix this but i can't seem to find a solid answer, there's a lot of talk about how the power supply or the psu is no good but i don't think this is my situation like i mention on windows xp never had problem turning it on it's only after installed windows vista....I came close to finding the answer from a forum i read where this guy had to go into bio and changed his HDD delay but as for my mother board i can't seem to find this option anwhere in bio

my motherboard is Asus p5k

More about : installed vista power switch turn

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dinh22ca said:
Hi all i ran into a really weird problem after installing windows vista from windows xp. I never had problem with turning the pc on when i was running xp but now on vista after i turned the pc off i can't turn it back on unless i hit the power switch off and back on then the front power button then it'll turn on. I've been researching online to fix this but i can't seem to find a solid answer, there's a lot of talk about how the power supply or the psu is no good but i don't think this is my situation like i mention on windows xp never had problem turning it on it's only after installed windows vista....I came close to finding the answer from a forum i read where this guy had to go into bio and changed his HDD delay but as for my mother board i can't seem to find this option anwhere in bio

my motherboard is Asus p5k


Don't know, but you could try the ASUS support forums.
http://support.asus.com/ServiceHome.aspx?SLanguage=en
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XP doesn't use as much power as Vista and Win 7 as both those Oses draw more for visual themes. Perhaps you could state the Watts of your PSU?

I'm only offering a suggestion other than "I don't know, try elsewhere".

You may need to replace the PSU.

Do you have any usb devices attached like an external hdd? It should not be left connected prior to shut down ot at boot up.

Perhaps it might be something like an overloaded powerboard, best not to have a heater or fan on the same powerboard (running).

You installed Vista on XP but what else can you tell us about your rig? CPU? GPU? Ram? Motherboard brand?

If you are running two graphics cards, it could be that a 600 watt PSU is not enough. Without more details, it is difficult to guess correctly.
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