win 7 reboots randomly Kernel-Power

Correction: Did NOT Resolve it for me.

I was having the same problems - restarting twice per day as if someone switched the laptop off and on. No bluescreen. I thought it was a power supply issue.

After Googling extensively and reading all these posts (and trying some of the suggestions), I reinstalled all the drivers that came with the laptop - starting with the ChipSet drivers.

The system was stable for 2 whole days - then restarted 3 times in 6 hours.

After many months of crashing/blue screen/kernal dump, I belive I have fixed my issue.
Go to Power options/change plan settings/change advanced power settings/processor power mangaement/minimum processor state/set to 100%
I believe the default stting of 5% is not enough to maintain stability running more than 2 gb of ram.
Hope this helps
Cheers EMAIL REMOVED

yaro said:

hey guys i got some problm with windows 7 ultimate x64 it just reboot all the time itself ,already couple days. Already tried fixdisk, firmware on my hd doest need to be flashed at least that what segate instaler told me.i turned off auto reset at system failure,but system resets anyway reboots without blu screen .so just got this from log
<

Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
<Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331C3B3A-2005-44C2-AC5E-77220C37D6B4}" />

<EventID>41</EventID>

<Version>2</Version>

<Level>1</Level>

<Task>63</Task>

<Opcode>0</Opcode>

<Keywords>0x8000000000000002</Keywords>

<TimeCreated SystemTime="2009-09-16T16:02:10.789625100Z" />

<EventRecordID>5262</EventRecordID>

<Correlation />

<Execution ProcessID="4" ThreadID="8" />

<Channel>System</Channel>

<Computer>Yaro</Computer>

<Security UserID="S-1-5-18" />

</System>


- <EventData>
<Data Name="BugcheckCode">0</Data>

<Data Name="BugcheckParameter1">0x0</Data>

<Data Name="BugcheckParameter2">0x0</Data>

<Data Name="BugcheckParameter3">0x0</Data>

<Data Name="BugcheckParameter4">0x0</Data>

<Data Name="SleepInProgress">false</Data>

<Data Name="PowerButtonTimestamp">0</Data>

</EventData>


</Event>

thx for any help

This is my first post on the board, and what's being discussed here in this thread is why I joined.

I've been having random reboot problems since the PC was built in March. Although the largest percentage of times the reboot happens is shortly after turning on the PC, it happens at other times too, and it's very random... surfing the net, viewing files, sitting idle, whatever.

I'm not a techie by any stretch, but my father has over 25 years of experience with computers. His thought was that it was my original Nvidia graphics card, so I replaced it with an ATI Radeon HD. It continued to happen, so we rebuilt the computer. Afterwards, it happend less, but was still occuring. At this point, I got so frustrated that I went back to XP.

Then I joined this forum. Lots of things to think about and try. My PS is an Antec 750W, and I just read something negative about their power supplies. However, 750W is a lot of power, isn't it? Read earlier in this thread that someone went from 650 to 700, and that did the trick. Hmm...

Your PS should be adequate for your system.

If you can borrow another one to test with you can rule this out.

You might try bumping your NB voltage (QPI, I think) and/or DRAM voltage, with four RAM cards it sometimes needs a little extra voltage to run stable.

You can test your RAM with memtest86+, check this tutorial for the procedure: RAM - Test with Memtest86+
Be sure to run the tests with one RAM card at a time alternating the slots.

Dave76 said:

You might try bumping your NB voltage (QPI, I think) and/or DRAM voltage, with four RAM cards it sometimes needs a little extra voltage to run stable.

You can test your RAM with memtest86+, check this tutorial for the procedure: RAM - Test with Memtest86+
Be sure to run the tests with one RAM card at a time alternating the slots.

I'm not sure what you mean by bumping my NB voltage, but I'll show your reply to my father, and he'll know what to do. Thanks for the reply, and I promise to post my results once I've tried it.

Older CPUs and motherboards had a seperate chip to controll the communications among the CPU, RAM, BIOS ROM.

Your "North Bridge" is integrated in the CPU and the BIOS setting that will let you adjust the voltage is usually called QPI.

The northbridge, also known as a memory controller hub (MCH) or an integrated memory controller (IMC) (<<Click here for explaination) in Intel systems (AMD, VIA, SiS and others usually use 'northbridge'), is one of the two chips in the core logic chipset on a PC motherboard, the other being the southbridge.

With a slight increase in voltage this will help the communication between the RAM and CPU.

If it's at 1.1v then change it to 1.2v, this should be enough to help it.

Dave76 said:

With a slight increase in voltage this will help the communication between the RAM and CPU.

If it's at 1.1v then change it to 1.2v, this should be enough to help it.

Okay, thanks Dave. I'll give that a try.