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Windows 7: 2 Windows 7 PCs suddenly no longer boot, no POST

18 Jul 2009   #11
Lordbob75

Windows 7 Ultimate x64, Mint 9
 
 

Quote   Quote: Originally Posted by 7echno7im View Post
Jesse,
I have seen this before on some machines. Althought your power supply does seem really, really low on your 2nd machine. only 450? And you are running a C2Q with a 9600gt???

If you do not even get the BIOS post screen, you will not be able to try the things people have suggested. If there is no POST, it is not software.

I would do what LordB said and reset the CMOS.

If this doesn't work, take all peripherals except 1 stick of RAM, CPU, and 1 Video card (no sli) out. And try booting. Work your way up.


Again, your 2nd machine's power supply it very, very low. I am surprised you had the right power rails to power the 9600gt. Did you use adapters?
He brings up a good point. Take out ALL NON ESSENTIAL HARDWARE, and see if the computers will boot. If not, then it is either BIOS, or your mobo.

~Lordbob


My System SpecsSystem Spec
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18 Jul 2009   #12
7echno7im

Windows 7 7600.16384 x64
 
 

Quote   Quote: Originally Posted by Lordbob75 View Post
He brings up a good point. Take out ALL NON ESSENTIAL HARDWARE, and see if the computers will boot. If not, then it is either BIOS, or your mobo.

~Lordbob

oopps I edited my post after you quoted me >.<
My System SpecsSystem Spec
18 Jul 2009   #13
Lordbob75

Windows 7 Ultimate x64, Mint 9
 
 

Quote   Quote: Originally Posted by 7echno7im View Post
oopps I edited my post after you quoted me >.<
Oh well, I still threw it out there. No worries mate.

~Lordbob

P.S. RRRAAAAWWWWWRRRRGGGGHHHHHHH!!!!!!!!!!!!!!
My System SpecsSystem Spec
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19 Jul 2009   #14
jesseftw

Windows 7
 
 

So... I've got both systems back up and running now.

System #1 turned out to be hardware failure on the motherboard at dimm b2 (memory slot 4). All the memory sticks are fine but when slot 4 had anything in it, the computer would instantly go BSOD when trying to load Windows. I did have to do a battery pull to get the POST again. To figure out what was doing it, I yanked all components and put them back one by one. I did several tests on the memory and did multiple configurations to make sure that it was dimm b2 and not any of the sticks. I updated the bios from v1205 to v1503. The OS is intact and everything is running normally so far.

System #2 did require a reinstallation of the OS. Startup recovery/repair was unable to fix the problem. Fortunately, Windows 7 was able to back up the previous installation under a Windows.old directory, thereby preserving my documents. I was already using the latest bios v2101 but had to reconfigure after the battery pull.

It looks like I just had bad luck with the 2 Win7 systems dying in the same day. The problems so far seem unrelated. I'll definitely be keeping sleep mode disabled on both systems from here on out. It's not worth replacing the motherboard on System #1 just for one more memory slot so I'll keep using it with the 6gb instead of 8.

@7echno7im
I think peak usage on System 2 is right around 300w

Thanks to everyone for all the help!
My System SpecsSystem Spec
19 Jul 2009   #15
7echno7im

Windows 7 7600.16384 x64
 
 

Quote   Quote: Originally Posted by jesseftw View Post
So... I've got both systems back up and running now.

System #1 turned out to be hardware failure on the motherboard at dimm b2 (memory slot 4). All the memory sticks are fine but when slot 4 had anything in it, the computer would instantly go BSOD when trying to load Windows. I did have to do a battery pull to get the POST again. To figure out what was doing it, I yanked all components and put them back one by one. I did several tests on the memory and did multiple configurations to make sure that it was dimm b2 and not any of the sticks. I updated the bios from v1205 to v1503. The OS is intact and everything is running normally so far.

System #2 did require a reinstallation of the OS. Startup recovery/repair was unable to fix the problem. Fortunately, Windows 7 was able to back up the previous installation under a Windows.old directory, thereby preserving my documents. I was already using the latest bios v2101 but had to reconfigure after the battery pull.

It looks like I just had bad luck with the 2 Win7 systems dying in the same day. The problems so far seem unrelated. I'll definitely be keeping sleep mode disabled on both systems from here on out. It's not worth replacing the motherboard on System #1 just for one more memory slot so I'll keep using it with the 6gb instead of 8.

@7echno7im
I think peak usage on System 2 is right around 300w

Thanks to everyone for all the help!
Ok no problem. Good job narrowing down and troubleshooting your system. Enjoy 7. Glad it is now working, and if it goes sour again.... we'll be here.
My System SpecsSystem Spec
20 Jul 2009   #16
Frostbite

 

Glad to hear you got them both back up. Always a pain when these things happen but also nice when you get the back working again.
My System SpecsSystem Spec
20 Jul 2009   #17
jesseftw

Windows 7
 
 

Thanks again
My System SpecsSystem Spec
20 Jul 2009   #18
pparks1

Windows 7 Ultimate x64
 
 

Glad that you were able to figure this out. I was going to suggest checking the RAM modules themselves as I had a box act very similarly to what you are describing. It turned out that one of my RAM sticks was causing the issue. I could move the stick of RAM around and the problem would follow...but once removed form the system everything was alright. However, by time I saw the thread, you had already figured it out and responded on the 2nd page.
My System SpecsSystem Spec
07 Jun 2010   #19
drak

windows vista and 7 ultimate
 
 

im actually having this very same problem on two of my other machines. tho they are not running seven (xp/Vista) ill troubleshoot the same as you and see if thats fixes it. i did pull the cmos battery out of the xp machine with no luck getting post. if i take everything out except vid card 1 stick of ram and one hard drive and stilll no POST what are my other options?
My System SpecsSystem Spec
17 Apr 2011   #20
bigpygme

Windows 7 Professional x64
 
 

happened to me too - Win 7 Pro x64, no post, fans spinning. reset CMOS and jumper, no joy. took out the video card and the BIOS started and announced "Found new CPU" !!! Still have no idea what that was about, but it started to boot after that.
My System SpecsSystem Spec
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 2 Windows 7 PCs suddenly no longer boot, no POST




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