WHICH booting steps?
Please detail EXACTLY YOUR situation (DO NOT assume that anyone's else is the same as YOURS).
Standard Litany, please:
Of course if you re-install (no matter if from "removable" drive, DVD, Network or *whatever*) you are going to OVERWRITE parts of the already installed OS, that will be SEVERELY affected (in the sense that it will be not as it was before, you will need to reinstall all your programs).
Apology for not following the Standard Litany, and thank you so much for replying my question.
I am using windows 7 pro (64bit, no Install DVD or Repair Disc), and after tried to run the software Spyhunter to fix the "kidnapped" chrome (the Spyhunter is said able to fix that problem, so here I am now), my laptop only goes to a black screen with the message "Error 13: Invalid or unsupported executable format" after restart. If I press any key to continue, it enters a red screen with a menu list, but, whichever option I have selected, it only brings me back to the black scree (black screen, press any key to continue -> red screen, select an option and press Enter -> back to the original black screen).
Then, I found this post and your suggested solution.
I tried this:
When you are in the last screen (at the grub> prompt) type:
It should most probably give you (hd0,0) as result.
find --set-root /bootmgr
after find /bootmgr, it didn't show any result.
Then, I follow this:
Ideally you should make the device bootable.
A suitable tool is RMPREPUSB:
if you additionally add to it the Easy2boot:
it will be easier later to copy to it (and have it boot) the downloaded Windows 7 .iso.
To hopefully clear the current situation of your PC:
- the Spyhunter installed to it a version of grub or grub4dos
- the "remedy" in case of issues is to boot from a Windows 7 install DVD and run the bootsect.exe tool to restore the original bootsector of the active partition/volume
Normally grub4dos can directly chainload the BOOTMGR file (i.e. do the same thing that a Windows 7 bootsector does), when this succeeds, the Windows 7 on the internal disk boots fine, and then form it you can run the bootsectexe (and/or use some other tools/ways to better diagnose the issue and fix it).
In your case attempting doing that resulted in an error, what we don't know if the particular version of grub/grub4dos has this function not working or disabled, or if the BOOTMGR has been changed/corrupted by the Spyhunter, or if the issue is because your system is 64 bit (I doubt it, but cannot really say for sure), or if something else is happening.
The intended procedure is the following:
- boot from an external USB device partitioned/formatted by RMPREPUSB, which includes a version of grub4dos surely working in chainloading the BOOTMGR
- if that fails, add to the USB device the WIndows 7 .iso, boot to it and then be able to both restore a "surely clean" BOOTMGR and replace the bootsector using bootsect.exe.
Here what I did:
1. I prepared a 64GB (3.0) USB stick as my bootable device. I followed the steps in following page, but at step 5 "Install grub4dos button", the pop up window message is only for MBR (not PBR), I clicked yes, then another window pop up asking whether I want to overwrite it, I clicked Cancel (because I am not sure whether it should be overwritten). http://www.easy2boot...sing-rmprepusb/"
2. After the removable USB device is prepared (or it is not completely prepared?), I followed the instructions ( of Option 1) in another page to put the iSO into the device.
After these two procedures, I plugged the USD device to my laptop, then made the USD device the primary disc in BIOS boot options. The Easy2Boot interface did show up, but among the options in the menu list, I didn't see any win 7 but only Grub4docs.
And the result of course is fail, then I dug into the rmprepusb and easy2boot website again.
In second try, these are what I did:
1. Same as above
2. Same as above
3. Convert the win 7 pro 64bit ISO file to .imgPTN, put it in the \_ISO\MAINMENU folder, then run WinContig in RMPREPUSB.
4. Plug the device again to the laptop, in E2B menu list, an option "Install Win 7 64bit" appeared. I clicked on that option, there were few steps in between, but the last step I remembered was, I selected "BOOT from this device (MBR mode)".
I finally left the black/red screen, and enter win 7 screen. After selected language, it gives me two options, "Install now" and "Repair your computer". This is where my first posted question come from.
The result I am hoping to get is, able to boot normally again from the internal hard disk of my laptop (works as before the Spyhunter problem occurred), and all the data in the hard disk is not lost. Would this be possible?