Hanging at startup, Safemode OK

[Surgikill]

Hello all, The other day I had a problem with my computer. I woke it up from sleep mode, played some battlefield 3, and then shut it down. When I tried to start it again my bios posted correctly and then I see the windows "starting" screen, and the four orbs meet ad the windows logo just hang there. My HDD activity light goes crazy and then just stops, and it will not boot, it just hangs there forever. I can boot into safemode fine, but I do not know how to pinpoint the cause of this issue. I am either thinking it is a driver issue or a recent software change. I installed the newest nvidia driver for my gtx 460's in sli and i had fine performance and startups with them, but now I get this. I did not think a video driver would cause these issues, but I could be wrong. I also only have my keyboard and mouse plugged in because I have had issues with conflicting usb devices in the past.

Any help is greatly appreciated,
thanks

 

[Surgikill]

Alright maybe getting somewhere. It will boot into safemode but it will not boot into safemode with networking, it hangs on the CLASSPNP.sys driver, the plug and play driver. Is there any way I can fix this driver. I am also doing a virus scan to make sure that checks out as well.

 

[Surgikill]

Virus scan has revealed nothing and I uninstalled the new graphics driver that was installed and I am still having the same problem. Can somebody help me out because I am at a loss.

 

[linnemeyerhere]

Do a restore back to a point when the system was working fine.

 

[Pauly]

system restore would be easiest way
Give it a go

 

[Surgikill]

That has already been done. Still having the problem. I restored it about 2 days ago.

 

[linnemeyerhere]

Sounds like a repair install could do the trick.
http://www.sevenforums.com/tutorials/3413-repair-install.html?ltr=R&filter[3]=Installation%20and%20Setup

 

[Surgikill]

I am currently re installing windows. Will let you guys know if it works out correctly. If this does not fix it it is most likely a hardware issue correct?

 

[Surgikill]

And now it has frozen while trying to reinstall windows. Going to wipe the c drive and try again.

 

[Surgikill]

Still freezes even with the c disk wiped. Could this be indicative of a bad disk? Or is it something else like a motherboard or RAM issue?

 

[linnemeyerhere]

Pull the SLI out and try and if needed then pull all ram sticks but the #1 positon ram and report back.

 

[Surgikill]

It still locked up with sli bridge gone. Trying it with 1 ram stick now. If it's still an issue the only thing I can think of is the hdd. I ran a disk check and it came back fine.

 

[Surgikill]

Alright well it was either my graphics card or my a RAM stick, because I removed my bottom sli card and tried another stick and it worked fine. Thinking its my card but can't be too sure. At least now I know where to look.

 

[linnemeyerhere]

I Googled and came up with numerous threads, Try unplugging all sata cables and re-attaching same. Here is a link to just one thread but I would do your own search and read up...I think it will be something simple but it could take some investigation and reading plus trial and error....stay with it. Good news is the safe mode operation.
Laptop hangs up at Classpnp.sys file. - Microsoft Community

 

[linnemeyerhere]

Then there's this I found right here !
http://www.sevenforums.com/crashes-debugging/141151-windows-7-safe-mode-reboots-classpnp-sys.html

 

[Surgikill]

Well I removed the bottom graphics card and reinstalled all the RAM and I am running smoothly now. Sucks that I have to reinstall everything. I am going to try and get the card running properly again if I can and I will read up those articles. Maybe the 310.64 driver messed something up. Anyways if I can't get it running I may jump up to a 660. Thanks for the help guys, going to run memtest when I get a chance to verify that all of my RAM if still good.

 

[linnemeyerhere]

Good but sorry it looks to be a hardware issue, likely not ram but worth testing. Maybe you can play with a previous driver and get your SLi back?

 

[Surgikill]

That's what I am thinking but it wouldn't explain why it wouldn't install windows, the nvidia drivers aren't present that early on. I have had the card for a year and a hal or two years, never ran hot, its a galaxy super oc, both are in sli oced to 810 core 1800 memory

 

[linnemeyerhere]

Keep us in the loop on what you find.

 

[Surgikill]

Will do, so far it is faulty hardware, but if I rollback the driver and it works then it is a known driver issue.