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Windows 7: Wiping System to Re-install Win 7 - now "missing operating system"

24 Dec 2015   #11

Win-7-Pro64bit 7-H-Prem-64bit

Well to be safe I would also get another drive and leave that one alone
You can try to reset your bios to default if you haven't already possibly the F5 key ?

Pretty weird I would also try power drain
Remove the battery and hold down the power button for 1 minute
Reinsert the battery and use the F8 key should work to change the boot device without going into the bios as said.

My System SpecsSystem Spec
24 Dec 2015   #12

Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64 +Linux_VMs +Chromium_VM

It could be a bad media DVD disc.
Try the disc on another PC and see if it can boot.

Work through this tutorial by gregrocker:
Troubleshooting Windows 7 Failure to Boot
My System SpecsSystem Spec
24 Dec 2015   #13

Windows 7

Quote   Quote: Originally Posted by Sasha100 View Post
1) the laptop is turned on and the message is my my screen: "missing operating system".
2) I put in the 'Boot Disk' or the 'Win 7 Disk' into the DVD/CD slot.
3) I turn off my computer.
4) I turn on my computer and when the Dell logo appears I tap F12 to get the 'Boot Menu'.
Stop right there. If you already changed the boot order to cd/dvd first then it should boot
with your W7 installation disk in. Seems you may be interfering with boot order and it goes back
to try and boot hard drive with no OS on it. Maybe?
My System SpecsSystem Spec

25 Dec 2015   #14
Layback Bear

Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64

I'm inclined to believe that what ever disc is being used is not bootable.
My System SpecsSystem Spec

 Wiping System to Re-install Win 7 - now "missing operating system"

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