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Windows 7: Boot problem

11 Aug 2012   #1

Windows 7 Professional 64bit
Boot problem


So, some months ago i turned on the pc a "missing operating system" message appeared. Also noticed that a "no harddisk detected" message also appeared.

I went to the BIOS and the two hdd's are there and the boot order was ok.

Last week i created a bootable cd to attempt to repair windows but when i go to repair your computer windows 7 is not listed.

I hope i didnīt made permanent damage since i've reset the BIOS to default the first time I saw the problem.

I don't know very much about this and so i donīt know what to do.

Thanks in advance.

My System SpecsSystem Spec

11 Aug 2012   #2

Microsoft Community Contributor Award Recipient

MS Windows 7 Professional 64-bit SP1

Fill in your system specs so we can help you better, thanks
My System SpecsSystem Spec
11 Aug 2012   #3

Windows 7 Professional 64bit

anything specific?

I've filled the more relevant ones.
My System SpecsSystem Spec

13 Aug 2012   #4

Windows 7 x64

Did you make any hardware changes just before this happened?

You might check the bios to see what configuration the SATA controller is in. You were probably running the default but if Windows can't see the drives, you may try changing it to the other, IDE to AHCI or the reverse.

Any chance you might have some type of virus? How old are the drives?
My System SpecsSystem Spec
13 Aug 2012   #5

Windows 7 Professional 64bit

No I didnīt made any changes. I bought the computer in 2009 so the drives are not that old i think.

I can see the drives on the bios which leaves me with the virus option.. How can I scan for virus?
My System SpecsSystem Spec
13 Aug 2012   #6

Windows 7 x64

I'll give you the Windows Defender Offline link, but it still seems strange windows cannot even see the drives. Maybe using Partition Wizard to look at the drives might help.

But try this to see if it finds anything.

What is Windows Defender Offline?
My System SpecsSystem Spec
13 Aug 2012   #7

Windows 7 Professional 64bit

ok thank you. i'll try that tomorrow
My System SpecsSystem Spec

 Boot problem

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