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Operating System not Found

By keithc2004 ·
XP Home ED after plugging in a new DVD/CDRW drive into laptop 9compa presario 2700T) I get an "operating system not found" error. Bios boot order is correct also if I place OS CD in drive still recieve same messgae and no option to press key to boot to cd. Connector type on drive is compatible with laptop interface. Bad drive?

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re: operating system not found

by Black Panther In reply to Operating System not Foun ...

If you 'unplug' the DVD/CDRW Drive does it still happen?

Have you by any chance accidently disconnected any other leads to the hard drive??


The BIOS hasn't detected the hard drive

You have an incorrect Master Boot Record

The hard disk itself is damaged

One of your partitions is marked as 'active' when it shouldn't be

The partition containing the Master Boot record is no longer set as Active

Those are the general causes of the problem but how do you get your pc up and running again.

1/ The first line of defence is the BIOS (Basic Input/Output System)

2/ Reboot your PC and, at the appropriate time, tap the Del key or whatever key your pc requires to enter the BIOS.

3/ Check in the Standard CMOS Setup that your hard drive is listed.

4/ Assuming your Hard Drive is listed then you can rule out the BIOS as being the problem.

5/ If it isn't listed in the BIOS you will need to check your PC manual to see what settings you need to alter to auto-detect the hard drive. If this fails you may need to manually insert the hard drive settings.

6/ Once you have ruled out the BIOS you should start to look at the Master Boot Record. Insert your XP CD into the CD-ROM and allow setup to begin. At the Welcome to Setup screen press 'R' to open the Recovery Console. This is a command line interface. You will need to select which operating system you are using from the available list and then insert your administrator password. If you are using XP Home then ignore the administrator password (unless you have set one yourself) and simply press Enter.

7/ Recovery Console will now run

8/ At the command prompt type: fixmbr and press Enter

9/ If fixing the Master Boot Record doesn't do the trick it may be worth checking to see if the partition that windows is installed on is actually Active. Obviously, if you only have one partition on your system and that contains Windows XP then that will, naturally, be set as the active partition. This option is more for those users with dual boot systems where you have an operating system on drive C: and drive If you have used a third party application, such as Partition Magic to create a partition you may have inadvertently made the D drive active thus cutting off the C: drive which contains the start up files. A quick way of finding out is to try booting up with an Emergency Start-Up Disk (see Windows XP FAQ - Question 10). If you can boot up with the Start-up disk go to Control Panel and click the Administrative Tools Icon followed by the Computer Management icon. When the Computer Management window opens click the Disk Management option on the left of the disk management pane. In the disk management window - lower half - make sure that the C: drive say's 'Healthy System' Also, if you can boot from an Emergency Start Up Disk you know your hard drive hasn't expired.

10/ If you can start you machine with an Emergency Start Up Disk go to Control Panel, click on Administrative Tools followed by Computer Management. Finally the click the Disk Management option. Now right click on the drive you want to make Active and select 'Mark partition as active' from the drop down menu. Alternatively, if you have a copy of Partition Magic you can use this to actually reset the correct partition as the Active system drive.

11/ If non of the above rectify the problem it is, unfortunately, safe to say that your hard drive is on it's last legs and is in need of replacement.

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RE Operating System not found

by keithc2004 In reply to re: operating system not ...

Thanks Black all valid points and ya I been through it all its standard troubleshooting. The system boots fine without the DVD/CDRW combo drive installed. The thing thats bugging me is the drive seems mechanicaly sound as in once cd is placed in drive you can her spin and sounds like normal operation. I think its a bad combo drive but I hate not being absolutely sure before I have to send it back.

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Combo Drive

by Black Panther In reply to RE Operating System not f ...

must be some sort of 'conflict'. Easier to try another drive than muck around trying to figure out the exact cause.

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by keithc2004 In reply to Combo Drive

Thanks Black I thinking conflict some how as well. Off topic here but they doing much SQL work down under?

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It points to itself

by mjd420nova In reply to RE COMBO Drive

the combo drive is faulty. More than likely the
data buffer chip is bad and is holding off the
normal function of the hard drive. Or the master/slave selection is incorrect.

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Not trying to be funny...

by PESK, mbcs, mcse, mcitp, sts In reply to It points to itself

...but have you checked the jumper on the DVD drive. Sounds like it is being recognised as the PRIMARY MASTER on IDE0 as opposed to SECONDARY MASTER on IDE1...Just thought I'd point out...
P.S. If unsure, set all jumpers to CS (Cable-Select)...EXCEPT the IDE0, main HDD.

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