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Windows 7: Mbr corrupt and i/o device not found.


27 Sep 2012   #1

Windows 7 home premium 64bit
 
 
Mbr corrupt and i/o device not found.

Hai!
Guys iam having a problem with my assus n55sf. I try to clean my asus every weekend (clean, scan disk & defrg) and shut down. When i try to on it show me windows 7 repair (recom). I dont know whats wrong. I start repair my asus and the result (mbr corrupt) i try fix mbr it show me (i/o device not found) i go to bios and check my hard disk its there..
Please guys help me...


My System SpecsSystem Spec
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27 Sep 2012   #2

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

boot into windows recovery environment "repair your computer" and select command prompt.

Code:
 
diskpart
list vol
sel disk 0
list part
exit
All partitions are still there?
you saw volumes and drive letters. Ignore the dvd drive letters. Assume you have C,D,E (and F dvd)

Code:
 
chkdsk/f c:
chkdsk/f d:
chkdsk/f e:
no errors? if errors... run it again. All errors gone and repaired?

Code:
bootrec/fixmbr
bootrec/fixboot
Both command succesfully?
My System SpecsSystem Spec
27 Sep 2012   #3
Microsoft MVP

 

Why are you runnning Scandisk as part of regular maintenance? That's ridiculous. Windows 7 doesn't need that much cleaning and defragging anyway. Just monthly at the most run CCleaner and Puran Defragger's boot-time defrag. Periodically add Disk Check option to the defrag.

Boot the Windows 7 installer System Recovery Options or System Repair Disk to run Startup Repair - Run 3 Separate Times.

If this fails work through these steps for Troubleshooting Windows 7 Failure to Boot
My System SpecsSystem Spec
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 Mbr corrupt and i/o device not found.




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