Saturday, 4 January 2020

safe mode - F8 not showing "Advanced Boot Options" on a Windows 7 PC


Background


I'm working on dis-infecting a Windows 7 PC where the user opened a ZIP email attachment.


All the symptoms exactly match this description of the "Data Recovery" scareware, including these messages:



  • Windows detected a hard disk problem A potential disk failure may coss loss of files, applications and documents stored on the hard disk. Please try not to use this computer until the hard disk is fixed or replaced.

  • Critical Error RAM memory reliability is extremely low. This problem may cause system failure


See the end of this post for details of the machine spec.


Initial Goal


I first want to boot the computer in Safe Mode, so that I can run various tools such as TDSSKiller.


Trying to boot in Safe Mode


As the computer starts up, it offers the following options:



  • Del BIOS Setup

  • Tab Display BIOS POST Message

  • F8 Boot Menu

  • Alt+F2 Ez Flash 2


I hoped/expected that pressing F8 would get me into the Advanced Boot Options screen, as for to choose Safe Mode.


However, hitting F8 during start-up only shows the following:



Please select boot device:



  • CDROM:P0-TSSTcorp CDDCDW SH-S22

  • RAID:Intel DATA


  • RAID:INTEL SSDSA2M160G2GC




  • up-arrow and down-arrow to move menu selection



  • ENTER to select boot device

  • ESC to boot using defaults



My question: Is there something about my machine configuration (see below) that is preventing the Advanced Boot Options menu from showing?


Machine configuration



  • C: drive is SSD - Intel SSDSA2M160G2GC

  • Other partitions are of a RAID 1 pair

  • Motherboard: ASUS P6X58D-E

  • OS: Microsoft Windows 7 Ultimate 64-bit



Answer



I think I've found the answer: this YouTube video says that on some computers, F8 brings up the "Select boot device" menu that I described above, and if that happens, to hit Esc then keep hitting F8 until the Advanced Boot Options screen appears.


I'll give it a go.


Update


First attempt failed: it just booted normally.


On second attempt, I tapped the F8 as rapidly as I possibly could, after hitting the Esc key, and almost immediately got the Advanced Boot Options menu.


So, I think the issue is that the SSD makes the PC boot so very fast that the standard advice of 'hit the F8 once a second is useless!


(Thankfully, TDSSKiller reported no rootkit, and Malwarebytes' Anti-Malware is now chugging away, and finding stuff to remove, so things are looking up, relatively speaking)


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