Keyboard & Mouse (all PS/2) Not Working in Safe Mode Tags: Safe Mode Mice PS/2 Keyboards Windows 7 Last response: November 26, 2012 7:49 PM in Windows 7 Share TakonToms November 26, 2012 6:18:30 PM Hello, PROBLEM: In SAFE MODE, keyboard and mouse (all PS/2) not working. In Safe Mode: COM1 auto assigned to IRQ 1 (conflict with keyboard). In Normal Mode: COM1 auto assigned to unused IRQ (no problem). It's a new installation of Windows 7 Ultimate. I never use any Serial or Parallel ports. Mouse auto assigned to IRQ 12 (default) but doesn't work too in safe mode (depend on keyboard). QUESTION: How to manually assign IRQ for COM1 in Safe Mode? ALTERNATIVE QUESTION: How to remove COM1 from Windows completelly? Any help are appreciated. More about : keyboard mouse working safe mode mbarnes86 a b $ Windows 7 November 26, 2012 7:04:30 PM Hi I assume you can get into BIOS Once there disable Com1 & Com2 and possibly printer port LPT1 (as never used does no harm) see if this works, If not find a USB mouse regards Mike Barnes m 0 l TakonToms November 26, 2012 7:49:05 PM Hello, USB mouse working (I take screenshot using emergency mouse). 1. In BIOS, I try to DISABLE/AUTO/MANUAL the Serial and Parallel ports (COM1, COM2, LPT1): Doesn't have any effects, Windows (Plug and Play) does NOT depend on BIOS settings. 2. In Safe Mode, I try to DISABLE COM1, UNINSTALL COM1, UNINSTALL keyboard, ASSIGN COM1 to unused IRQ: Doesn't have any effects. Keyboard's property box still say "IRQ conflict, used by COM1". 3. I try to edit system.ini then reboot: [386Enh] COM1Irq=4 Doesn't have any effects, COM1 still assigned to IRQ 1 in Safe Mode. 4. I try to "Take Ownership" registry and then try to delete COM1 registry in HKLM\SYSTEM\CurrentControlSet\Enum\ACPI\PNP0501\1 Access denied. Please correct me if something wrong. Regards, thanks. m 0 l Can't find your answer ? Ask ! Publish Related resources Keyboard and Mouse only working in safe mode. Help? Forum ps/2 mouse only works in safe mode, not normal mode Forum mouse and keyboard not working in safe mode Forum SolvedMouse OK, but keyboard does not work even in Safe Mode Forum Mouse and Keyboard only work in safe mode and BIOS Forum USB keyboard and mouse work in BIOS and safe mode screen but not when windows 7 launches Forum SolvedHelp, PS2 mouse & keyboard not working Forum usb ports not working,have one ps2 port working how to use both mouse and keyboard Forum Bluetooth COM Port Not Working - Mouse/Keyboard Unusable - No PS/2 Ports - How To Repair? Forum Ps2 keyboard and mouse stop working at login screen Forum Ps/2 keyboard/mouse not working in xp after os install Forum Ps2 mouse and keyboard don't work when i plug in my vga crt monitor. Forum Can get prompt for safe mode options but keyboard is not working to arrow to it. Forum Keyboard and mouse won't work after waking up from sleep mode Forum Mouse only works in safe mode after system restore Forum Mouse works in safe mode but not in normal mode Forum Mouse Doesn't Work in Safe Mode Forum Starting window in Safe Mode, Microsoft Mouse doesn't work.. Forum Can I use a Usb Mouse and a ps2 keyboard with a Maximus VII Hero motherboard Forum PS/2 or USB Mouse and Keyboard not recognized by Windows Forum More resources Read discussions in other Windows 7 categories Configuration Customization Drivers Security Laptops !