This custom-made PC was initially loaded with Windows 8 which has been successfully replaced with Win 7 Home. Windows Defender Offline had been installed on: (1) bootable CD and (2) bootable flash drive to allow recovery from a system failure. All worked well until recently. But now it will not allow changing the boot sequence to either CD or flash drive by pressing either F11 or "delete" key; instead it consistently boots Win 7 from HD only.
Part 2 of the problem is in Windows. This cannot be fixed until all Win updates are downloaded and installed but this cannot be done possibly due to malware or config err. So it is possible that a reload of Win 7 from CD is needed however pressing the appropriate function key (F11) fails to allow access to the CD/DVD drive during POST.
Any help will be GREATLY APPRECIATED. Thanx.
Edited by Bewildered_Bob, 27 May 2015 - 10:11 AM.