Bootmgr is missing - No OS found

Rezident · 8 May 2012 at 23:09

Windows 7 update just now, needed a restart, after restart "bootmgr is missing" hit ctrl + alt + del. Tried repair but no OS is showing up so there's no OS to repair. Tried bootrec /fixboot (element not found) and bootrec.exe /fixmbr - says the operation completed successfully but doesn't actually fix it.

When I click load drivers I can see all my drives are there and can access them all, even the windows install is there. Any other fixes or ideas why windows update would do this?

Rezident · 8 May 2012 at 23:38

Yep forgot to say no new hardware or anything, just Windows automatic update! It's like vista all over again. Ok I'll try that thanks.

Rezident · 8 May 2012 at 23:48

Ok the AutoChk in startup repair found a root cause:
The partition table does not have a valid System Partition.

Must be why W Repair can't find an OS even though I can see the drives and files are still there.

Startup repair says:
Repair action: partition table repair
Result: completed successfully.

But after reboot I still get bootmgr missing. Its progress anyway, what else might work?

Tried bcdboot d:\windows but got "failure when attempting to copy boot files".

Rezident · 9 May 2012 at 12:26

Yes but no windows install shows up in windows recovery, how do I make the install show up?

Rezident · 9 May 2012 at 17:26

No oc and I've already verified all drives are working. I will test the memory next but there must be some way to repair the mbr that had mysteriously corrupted itself?

Rezident · 9 May 2012 at 17:30

Hm when I run windows memory diagnostic it says:
Windows cannot check for memory problems
An error is preventing windows from checking for memory problems during startup.

Really don't want to do a fresh install, any other ideas? I'll try anything at this stage.
Thanks.