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Error Loading Operating System


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#1 ben2233

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Posted 03 July 2010 - 12:53 PM

Hello everyone!

I had Windows Vista on a WD Velociraptor (74GB). Then I got a WD Velociraptor (300GB) and put Windows 7 on it. So, two Operating Systems on two separate hard drives. Normally, after my BIOS screen, a menu loads asking if I want to boot Windows 7 or Windows Vista. Vista was the C drive, 7 was the F drive. It worked gloriously for several months. But now the pain has begun. The sound on my computer was very quiet one day. Everything seemed set correctly, so I decided to try a restart. During the restart, when it reached the black Windows 7 screen, it seemed to freeze. I restarted the computer again. After the BIOS screen, where I would normally be asked what OS I want, it instead says "Error Loading Operating System". And now that is the message I get every time I try to restart my computer.

-Both hard drives are listed by my BIOS.

-If I disconnect or disable only the 74GB drive, I get "Error Loading Operating System"

-If I disconnect or disable only the 300GB drive, I get "Error Loading Operating System"

-I have not been able to locate my Windows Vista CD yet (although I probably could if it were the likely solution)

-I located my Windows 7 CD. I booted from the disc with only the 300GB drive and CD drive enabled in the BIOS. I went to the "Repair your computer". In the System Recover Options screen, there are no operating systems listed. I don't have a system image to restore from, so I select "User recovery tools..." anyways. I run the Startup Repair option, but it doesn't seem to help. If 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. Although it seems to run the memory diagnostic tests when I try Startup Repair. If I select Command Prompt and type "FIXBOOT" or "fixboot", it says it's not a recognized command.

I'm wondering if it might be a non-hard-drive hardware issue, since both HDs seem to have been affected simultaneously (I didn't use the Vista drive much, but I could always see it listed as the C drive whenever I opened an Explore window, which was quite frequently). Perhaps the motherboard is shot? But that would be a gigantic pain to replace, so hopefully it's something else.

I don't care too much about the Vista installation at this point. Although I'd definitely like to get my 7 installation back intact.

Does anyone have any ideas?

-Ben

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#2 ben2233

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Posted 03 July 2010 - 01:00 PM

When I try the Startup Repair, and Select "Click here for diagnostic and repair details", it says the following:

Startup Repair diagnosis and repair log
----------------------------------------------
Number of repair attempts: 1

Session details
----------------------------------------------
System Disk = \Device\Harddisk0
WIndows directory =
AutoChk Run = 0
Number of root causes = 1

Tests Performed:
----------------------------------------------
Name: Check for updates
Result: Completed successfully. Error code = 0x0
Time taken = 16ms

Test Performed:
----------------------------------------------
Name: System disk test
Result: Completed successfully. Error code = 0x0
Time taken = 16ms

Test Performed:
----------------------------------------------
Name: Disk failure diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
----------------------------------------------
Name: Disk metadata test
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Root cause found:
----------------------------------------------
The partition table does not have a valid System Partition.

Repair action: Partition table repair
Result: Completed successfully. Error code = 0x0
Time taken = 7987 ms

----------------------------------------------
----------------------------------------------




Upon restart, I get the same error messages as usual.

#3 cryptodan

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Posted 04 July 2010 - 10:02 AM

Root cause found:
----------------------------------------------
The partition table does not have a valid System Partition.

Repair action: Partition table repair
Result: Completed successfully. Error code = 0x0
Time taken = 7987 ms

----------------------------------------------
----------------------------------------------




Upon restart, I get the same error messages as usual.


The drive is not formatted you need to reinstall Windows 7.

#4 hamluis

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Posted 04 July 2010 - 11:18 AM

I would say that either your NTFS file system is damaged or your hard drive is damaged.

I'd run the appropriate hard drive manufacturer's diagnostic on each drive, just as a precaution.

A weak CMOS battery can make the system act strangely...so I would also replace the CMOS battery.

That message about the partition table...seems unlikely to be believealbe for two separate hard drives...perhaps your boot files are damaged and you may want to try repairing them.

Louis

#5 ben2233

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Posted 04 July 2010 - 03:02 PM

I downloaded and burned the 300GB HD diagnostic CD (with an ISO burner). I enabled both hard drives (C and F drives) and put the CD drive at the top of the boot sequence. It began reading from the CD drive, but I get the following messages:

Unable to locate the License Agreement file, DLGLICE.TXT!!!
Please make sure that the License Agreement file is located in the same path as DLGDIAG.EXE...


Then after a few seconds, it says:

Cannot load the file A:\COMMAND.COM
Insert correct disk and Strike any key


I will download the 74GB HD and give that a try... but does anyone know why the messages above might be appearing?

Is there a way to repair the boot files besides running the Startup Repair that I mentioned in my first post?

#6 ben2233

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Posted 04 July 2010 - 03:20 PM

I received the same error messages with the 74GB diagnostic as with the 300GB diagnostic (this time, I only had the C drive enabled, along with the CD drive).

#7 hamluis

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Posted 04 July 2010 - 03:41 PM

CMOS battery? A cheap attempted fix.

Cables? No, cables have nothing to do with what happened with the bootable CD.

Worth Reading, IMO.

Other users experience these same problems, as you can see by Googling your error messages.

Although I have Win 7 installed on two systems...I really haven't played with it enough to advise anyone on various features/capabilities.

To test your burned CD...detach both drives and see if the CD will boot properly (after changing BIOS boot options).

Louis

#8 coxchris

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Posted 04 July 2010 - 05:57 PM

Can you start the Recovery Console. I would try to replace the MBR

Using this http://support.microsoft.com/kb/927392

When in command prompt using that guide use the following command

bootrec.exe /FixMbr

Edited by coxchris, 04 July 2010 - 05:59 PM.

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#9 ben2233

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Posted 05 July 2010 - 04:06 PM

Hey guys! Thanks for the ideas. I'm working through a few different troubleshooting steps right now. But I noticed a very interesting tidbit which I thought deserved an immediate post:

If I go to the System Recovery Options screen (where it doesn't list any OSs) and click Load Drivers->OK, it brings up an "Open" file browser window. I click Computer, and it lists my hard drive! I can browse through all my files for my 300GB HD (the 74GB is disabled currently) and my external HD. The 300GB drive is listed as the C: drive now (probably because the 74GB drive is disabled).

I ran chkdsk /F c: in the recovery command prompt, and it said it made some changes. However, I still get the same "Error loading operating system" message on restart. I'll try FixMbr next... I had tried it before, but it couldn't find any OS to run it against. I'm going to try a few things to see if I can get it to run.

#10 ben2233

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Posted 05 July 2010 - 04:16 PM

Correction: when I ran FixMbr, it immediately said "The operation completed successfully." even though it didn't seem like it did anything. I tried FixBoot, but it said "Element not found.". Upon restarting, I have the same issues. I tried switching to the C drive in the command prompt (I typed "C:") and then ran FixMbr and FixBoot, but the same things happened.

Some other notes:
1) if I run /ScanOs, it finds 2 windows installations: Windows and Windos.old
2) If I can't get things working by the end of the day, I'll begin searching for a CMOS battery

#11 hamluis

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Posted 05 July 2010 - 04:25 PM

CMOS battery...costs less than $5, available anywhere selling electronic/watch/radio, etc. batteries.

Louis

#12 ben2233

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Posted 05 July 2010 - 04:43 PM

Yuck, this thing is taking forever. Booting to the Windows 7 CD is taking 5-10 minutes. Kinda strange...

I'm booting the Windows CD in safe mode w/ networking (in case some virus is being sneaky), and I'm running the startup repair. It's taking a long time, too (while saying "Searching for problems..."). It seems as if the disk drive is just getting crazy slow.

hamluis, I disconnected both drives and booted from the 300GB diagnostic CD (this ran pretty quickly). It said that it couldn't find a hard drive, press any key to continue. I did, and it's now giving the A:\COMMAND.COM error again.

Sorry if it seems like I'm going in a million directions at once... it's because I am. I'm currently out of ideas for now... time to hit the almighty Google for new ones. I look forward to hearing any other suggestions you all might have!

#13 ben2233

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Posted 05 July 2010 - 10:35 PM

Hmm... things just got worse. In the recovery command prompt, I switched to the C drive, then ran BOOTREC /FIXMBR, then BOOTREC /FIXBOOT. It sat there for a moment, then the screen went black. It remained that way for an hour or so, and I finally reset the system. Now the 74GB drive doesn't even show up in the BIOS. This is getting ugly.

#14 ben2233

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Posted 05 July 2010 - 10:48 PM

Strangely, the Windows 7 install now shows up on the System Recover Options screen. I selected it, and ran Startup Repair. After rebooting, I let it boot from that HD (300GB). It actually started loading Windows (the black screen with the windows logo) and then it froze for several minutes. Then... it finished loading. I now can access Windows 7.

Somehow, trashing my Vista install seems to have kicked 7 into gear. I don't understand. But what the heck, I'll take it.

If anyone sees this thread and asks "how did you fix it?": I guess I just got lucky. Hopefully some better educated individual on this board could speculate?

#15 coxchris

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Posted 06 July 2010 - 09:35 AM

ben2233,

I went ahead of myself I thought that your MBR was damage and corrupt. so let try this few steps to ruled out your MBR but your problem still existed.

<<Can you start the Recovery Console. I would try to replace the MBR

Using this http://support.microsoft.com/kb/927392

When in command prompt using that guide use the following command

bootrec.exe /FixMbr>>

The CMOS battery that hamluis stated seems logical in your scenario. The CMOS battery controls the POST procedures and the BIOS. The CMOS battery saves BIOS setting which all the information that the bios needs. if its failing you will see drives failing in the bios or the computer doing weirdly things like booting 7-10 min. You will get this error CMOS Checksum error or anything related to the CMOS when it fail.

Edited by coxchris, 06 July 2010 - 09:36 AM.

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