BSOD on boot up - can't get past Windows splash screen

PC was put to bed last night as per usual - no problems. In the morning, it was still powered up, supposedly in sleep mode, but would not wake. Pressed the rest button to reboot, but as soon as the windows 7 splash screen starts I get BSOD crash, and can't get any further past that. After several failures the system detected that I was having trouble loading windows and so gave me the opportunity to run system repair. I did this, but it came up with the message that it could not repair the system, and that a patch file was stopping windows from loading. I then tried to go back to a restore point - there were 5 available to me. 3 failed within 10 seconds of attempting with the error that it failed. Helpful. 1 failed after a longer wait with a message saying restore files were corrupt and pointed to a Trend Micro folder (which is my antivirus). The last restore point got to the point where it said it was finished, but then reported it had failed because of missing restore files.

I haven't tried booting up in safe mode, but if that gets me into windows, what next?

Do I guess that trend pushed through a patch overnight that screwed things up, so therefore proceed to uninstall it and see what happens?

Any other suggestions?

Sorry I can't post any of the files you ask for in a BSOD incident but I can't get into the PC.

Thanks for reading this.

If you can boot to safe mode than the core system is ok.

In safe mode you can do a system file check.
sfc /scannow
this operation will check and try to repair system files if there are any errors.

If there are errors which sfc cannot fix inplace reinstallation can be considered as next step:
https://www.sevenforums.com/tutorials/3413-repair-install.html

read tutorial to see what will be reset to default state.

If you have important user data on disk boot from CD/DVD/USB and save all your user files before attempting any further repairs !

No luck - I get the same BSOD when trying to boot up into safe mode. I managed to boot up off the DVD using a system restore disk but rerunning repair etc from that disk achieved nothing. I then tried to boot up a Ubuntu disk from DVD so I could look directly into the drives, and it froze at the first screen. On second and subsequent attempts the system now refuses to boot from DVD, regardless of what disk is in it. Also now find that the PC takes about 4 minutes to load BIOS!

The only message in the BSOD screen that seems meaningful to me is a reference to cng.sys. Don't know the significance of that.

So, I hope to find help at work - to see whether we can slot my hard disk into a different PC to see if it will boot up - might help narrow the problem to a hard disk, OS, or mother board problem. Memtest found nothing wrong with memory.

Or I might buy a MAC if all else fails!

[IMG]file:///tmp/moz-screenshot.png[/IMG]I ripped out the hard disk andtriedto boot up with a different PC. Same result - BSOd on start of Win7 splash screen. So seems like HD problem. Currently running Ubuntu on that other PC and it reports major HD failure. See attached screen shot. Why doesn't windos have such a neat feature.

So, downside is I need a new install on a new drive. Upside is it gives me a reason to instal it onto an SSD!