OS troubleshooting

Question 1

OS not found error?

Answer 1

Implies no hard drive

Question 2

Bootmgr not found?

Answer 2

Implies OS is there, but mootmgr/bcd is busted

Question 3

What is bcd

Answer 3

Boot configuration data - holds Bootmanager and boot loader information for each OS in the system. No BCD, no OS.

Question 4

What is a likely cause for a no boot device found error?

Answer 4

A USB messing up boot order

Question 5

What is win RE

Answer 5

Windows recovery environment - holds troubleshooting tools to fix your shit

Question 6

What are two methods to enter win RE

Answer 6

Installation media

Spam restarting

Question 7

You can’t access bootrec commands in a command prompt while signed into windows. Why?

Answer 7

It’s only available in win RE

Question 8

What does bootrec cmds do?

Answer 8

Fixes MBR, Bootmanager, bootloader, etc.

Question 9

What does bootrec /fixboot do?

Answer 9

Rebuilds boot sector

Question 10

What does bootrec /mbr do?

Answer 10

Fixes mbr

Question 11

What does bootrec /rebuild mbr do

Answer 11

Searches for any OS installations that aren’t currently within the BCD list and gives you options for adding them manually.

Question 12

What is a boot sector?

Answer 12

The part of a disk that holds the items necessary to boot an OS. This is what BIOS looks for upon start up.
Bios > Boot sector. Boot sector contains mbr, bootmgr, etc.

Question 13

What does bcdedit do if typed into cmd

Answer 13

Shows your info on your boot manager and boot loader. Combined, this is your bcd.

Question 14

How do you export your bcd data in cmd?

Answer 14

bcdedit /export [filename] you import the same way

Question 15

What dangerous diskpart command will wipe your drive of all partitions and data. A last resort.

Answer 15

diskpart

clean

Question 16

True or false: Windows refresh in Windows RE will keep your programs and only rebuild windows.

Answer 16

False, it’ll delete all your shit but keep your windows settings after rebuilding.

Question 17

How do you get to safemode in win 7

Answer 17

Spam f8 after bios but before windows screen

Question 18

How do you get to safe mode in win 8+

Answer 18

Recovery media or forced restart. OR hold shift while pressing restart in windows.

Question 19

What is a good method to test faulty video drivers

Answer 19

Low-resolution safemode

Question 20

What is the hidden admin account that comes with windows?

Answer 20

A powerful account hidden in windows you can’t see. Only use for troubleshooting or when needed.

Question 21

How do you activate the hidden windows account

Answer 21

net user administrator /active:yes

Question 22

Why are dll files important?

Answer 22

Many critical windows processes and services rely on them

Question 23

How do you fix a bad windows dll?

Answer 23

sfc /scannow

Question 24

Name four windows troubleshooters

Answer 24

Printer
Internet
Network adapter
Audio

Question 25

If you are having an issue with your PC, what are three of the best places to look for info and fixes.

Answer 25

Device manager Security and Maintenance Troubleshooters

Question 26

What are Two features of Sex and Maint?

Answer 26

Reliability history | Drive status

Question 27

What program do you run when an a program is likely designed for an older version of windows?

Answer 27

Compatibility troubleshooter

Question 28

What is the name of the win 7 and 10 individual file recovery system?

Answer 28

System Protection

Question 29

How do you see your system protection checkpoints on a file?

Answer 29

R.Click, properties, Previous versions

Question 30

How do you change your System Protection settings?

Answer 30

Right click your pc in file explorer, go to system protection

Question 31

A computer doesn't boot and gives a "Invalid boot disk" error. What's the likely cause?

Answer 31

Hardware issue.