regedit won't open on my computer, how do I fix this?

desbest

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Hello forum
Regedit won't open on my computer, how do I fix this?
Do I have a virus?
 

My Computer

System One

  • OS
    Windows 8.1 64 bit
    Computer type
    Laptop
    System Manufacturer/Model
    HP Pavilion 15 L2W58EA#ABU
    CPU
    Intel(R) Core(TM) i3-5010U CPU @ 2.10GHz
    Memory
    8GB
    Graphics Card(s)
    Intel(R) HD Graphics 5500
    Sound Card
    Realtek High Definition Audio
    Monitor(s) Displays
    N/A
    Screen Resolution
    1366 x 768
    Hard Drives
    1TB Hard Disk Drive, Seagate ST1000lm035-1rk172
    Keyboard
    Inbuilt keyboard
    Mouse
    Synaptics Touchpad (inbuilt trackpad)
    Internet Speed
    10MB (tested to be 7MB)
    Browser
    Mozilla Firefox
    Antivirus
    Comodo Internet Security
A little more info please. Do you get an error? What happens when you attempt to invoke regedit?
 

My Computer

System One

  • OS
    W10 Pro (desktop), W10 (laptop), W10 Pro (tablet)
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home built i7-8700K, Hp Envy x360 EVO Laptop, MS Surface Pro 7
    CPU
    3.7Ghz Core i7-8700K, 11th Gen Core i7-1165G7 4.7Ghz, 10th Gen Core™ i5-1035G4 1.1Ghz
    Motherboard
    ASUS TUF Z370-Pro Gaming, HP, MS
    Memory
    16G, 8G, 8G
    Graphics Card(s)
    AMD Radeon RX580, Intel Iris X Graphics, Intel Iris Plus Graphics G4
    Sound Card
    ATI High Definition Audio (Built-in to mobo)
    Monitor(s) Displays
    Dual Samsung U32J59 32 inch monitors, 13.3" display, 12.3" display
    Screen Resolution
    3840x2160 (Desktop), 1920x1080 (laptop), 2736x1824 Pro 7
    Hard Drives
    500GB ssd boot drive with 2 & 10TB Data (Desktop), 512GB ssd (laptop), 128GB SSD (tablet)
    PSU
    Corsair CX 750M
    Case
    Antec 100
    Cooling
    Coolermaster CM 212+
    Keyboard
    IBM Model M - used continuously since 1986
    Mouse
    Microsoft IntelliMouse
    Internet Speed
    665Mbps/15Mbps down/up
    Browser
    FireFox, MS Edge
    Antivirus
    Defender on all
    Other Info
    Retired in 2015 after working in the tech industry for 41 years. First 10 years as a Technician, the rest as a programmer/software engineer. After 1 year of retirement, I was bored so went back to work as a Robotic Process Automation Consultant. Retired for 3rd (and final) time in 2019.
There is no error. Nothing happens. It doesn't appear in task manager.
Also Notepad2 won't open also.
 

My Computer

System One

  • OS
    Windows 8.1 64 bit
    Computer type
    Laptop
    System Manufacturer/Model
    HP Pavilion 15 L2W58EA#ABU
    CPU
    Intel(R) Core(TM) i3-5010U CPU @ 2.10GHz
    Memory
    8GB
    Graphics Card(s)
    Intel(R) HD Graphics 5500
    Sound Card
    Realtek High Definition Audio
    Monitor(s) Displays
    N/A
    Screen Resolution
    1366 x 768
    Hard Drives
    1TB Hard Disk Drive, Seagate ST1000lm035-1rk172
    Keyboard
    Inbuilt keyboard
    Mouse
    Synaptics Touchpad (inbuilt trackpad)
    Internet Speed
    10MB (tested to be 7MB)
    Browser
    Mozilla Firefox
    Antivirus
    Comodo Internet Security
Something must happen. When you open a command prompt and enter regedit, what happens? Are you saying the prompt returns without any message at all? I would expect, at a minimum, it would return a message saying something like "command not recognized".

Look in the C:\Windows folder. Is regedit.exe in there?

It might be possible that malware or a trojan horse got on your system and replaced regedit.exe with something bogus. Have you tried running a virus/malware scan?
 

My Computer

System One

  • OS
    W10 Pro (desktop), W10 (laptop), W10 Pro (tablet)
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home built i7-8700K, Hp Envy x360 EVO Laptop, MS Surface Pro 7
    CPU
    3.7Ghz Core i7-8700K, 11th Gen Core i7-1165G7 4.7Ghz, 10th Gen Core™ i5-1035G4 1.1Ghz
    Motherboard
    ASUS TUF Z370-Pro Gaming, HP, MS
    Memory
    16G, 8G, 8G
    Graphics Card(s)
    AMD Radeon RX580, Intel Iris X Graphics, Intel Iris Plus Graphics G4
    Sound Card
    ATI High Definition Audio (Built-in to mobo)
    Monitor(s) Displays
    Dual Samsung U32J59 32 inch monitors, 13.3" display, 12.3" display
    Screen Resolution
    3840x2160 (Desktop), 1920x1080 (laptop), 2736x1824 Pro 7
    Hard Drives
    500GB ssd boot drive with 2 & 10TB Data (Desktop), 512GB ssd (laptop), 128GB SSD (tablet)
    PSU
    Corsair CX 750M
    Case
    Antec 100
    Cooling
    Coolermaster CM 212+
    Keyboard
    IBM Model M - used continuously since 1986
    Mouse
    Microsoft IntelliMouse
    Internet Speed
    665Mbps/15Mbps down/up
    Browser
    FireFox, MS Edge
    Antivirus
    Defender on all
    Other Info
    Retired in 2015 after working in the tech industry for 41 years. First 10 years as a Technician, the rest as a programmer/software engineer. After 1 year of retirement, I was bored so went back to work as a Robotic Process Automation Consultant. Retired for 3rd (and final) time in 2019.
Are you the admin of the computer?

If you are the admin run command prompt as admin/with admin privileges once the admin cmd prompt and copy everything inside the quotes and paste it to the admin prompt

" REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 0 /f "

If its successful you should see something that says successful or it will go to the line that was on the command prompt before you added the following in quotation marks .
If its something that is related to a policy then regedit should open after restarting your computer.

Before doing the following make a system restore point (i would say make a backup of your registry but yeah)
 

My Computer

System One

  • OS
    Windows 8.1
I tried to do a virus scan but it ended after one minute and said it was finished, so obviously a virus hacked into the antivirus, so I wiped out my computer and reinstalled windows and now it works.
 

My Computer

System One

  • OS
    Windows 8.1 64 bit
    Computer type
    Laptop
    System Manufacturer/Model
    HP Pavilion 15 L2W58EA#ABU
    CPU
    Intel(R) Core(TM) i3-5010U CPU @ 2.10GHz
    Memory
    8GB
    Graphics Card(s)
    Intel(R) HD Graphics 5500
    Sound Card
    Realtek High Definition Audio
    Monitor(s) Displays
    N/A
    Screen Resolution
    1366 x 768
    Hard Drives
    1TB Hard Disk Drive, Seagate ST1000lm035-1rk172
    Keyboard
    Inbuilt keyboard
    Mouse
    Synaptics Touchpad (inbuilt trackpad)
    Internet Speed
    10MB (tested to be 7MB)
    Browser
    Mozilla Firefox
    Antivirus
    Comodo Internet Security
Can you try to run it from the Run command.
Hold down the Start(Windows flag) key and press R. Type regedit into the window that shows up and hit enter.
 

My Computer

System One

  • OS
    windows8
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