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Windows 7: Format W7 error

30 Sep 2013   #1

Windows 7
Format W7 error


I'm trying to format a PC with Windows 7, but when starts installing in middle of installations I got some errors:

"The file or directory C:\Windows\winsxs damaged or illegible. Run Chkdsk".

OK, error 0x80070570.


"The file or directory C:\Windows\assembly\GAC_MSIL damaged or illegible. Run Chkdsk".

Tried Chkdisk, error event 50.

Always I start PC got missing bootmgr

(the pc haven't Windows now)

My System SpecsSystem Spec

30 Sep 2013   #2
Microsoft MVP

64-bit Windows 8.1 Enterprise

Hello cgentil,

It sounds like the hard drive may be dead or dying.

What brand and model is the hard drive? You should be able to download a hard drive testing program from it's manufacturer's site to run in Windows or at boot to scan the drive with. If it fails, the drive is dead.

If dead, you'll need to get a new hard drive.
My System SpecsSystem Spec
30 Sep 2013   #3

Windows 7

I don't know.

The PC is Compaq CQ61
My System SpecsSystem Spec

30 Sep 2013   #4
Microsoft MVP


As suggested test the HD with the maker's HD Diagnostic extended CD scan. Determine HD make by looking on it or googling any serial listed for it in BIOS setup. Download DOS ISO and burn to CD using Windows Image Burner, boot to run Extended Scan. If no maker's diagnostics then you can use Partition Wizard Bootable CD HDD surface test

If HD tests good, unplug all other HD's and peripherals,

Boot into BIOS setup, reset to defaults, save changes. (If an EFI BIOS you'll need to decide if you want UEFI BIOS vs. Legacy BIOS. If UEFI follow these special steps for Install, otherwise enable Legacy BIOS or Compatibility Support Module to proceed with normal install.) Set DVD drive first to boot, HD second, set SATA controller to AHCI, Save changes and Exit.

Then boot into Windows 7 installer DVD or flash stick burned or written using tool and latest ISO for your licensed OS version here.

At first installer screen Press Shift + F10, or enter System Recovery Options to open a Command Box, type:

SELECT DISK 0 (after confirming Windows 7 target HD #)

Next click Install Now, then Custom install to Clean Install Windows 7 to the partition you created. If it fails then report back at which step and the verbatim error message.

In addition read over these steps to understand the tools and methods which work best to get and maintain a perfect Clean Reinstall - Factory OEM Windows 7. The steps are the same for retail.

After install you can adjust partition size or Create new partitions for data, etc. in Disk Mgmt. You are creating the partition here for the purpose of wiping the HD and marking Active which overcomes certain install failures.
My System SpecsSystem Spec

 Format W7 error

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