How to i get my lenovo ideapad flex 4-1130 to go into boot menu or hard reset?

There isn't one

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Just go to Settings>PC Settings>Update and Recovery>Recovery

Make sure you have all your data backed up on your external hard drive as all the settings will turn to factory as if it is a new PC.

Hi,
Novo button is located in between the USB Ports and the Power Switch. Please see the uploaded image. Hope it helps.
Gulvinder

Lenovo IdeaPad A10 Manual PDF & Hard Reset - We've important information for owner of Lenovo IdeaPad A10 especially about manual, hardware and care guide. The manual is available in pdf format and support in english language. The Lenovo IdeaPad A10 is powered by Rockchip RK3188 Cotex-A9 Quad Core 1. 6GHz processor. It's 10. 1 " HD inhes with DDR3L. It is equipped with 16GB/32GB SSD. It is also powered by 2 cells/22. 6Wh Polymer. While for operating system is designed Android.

The Lenovo IdeaPad A10 User Manual consisting of 66 pages. Inside the manual you could find reference information for example safety information like electrical safety and Laser compliance statement. Then about Strategy for replacing FRUs, Strategy for replacing a hard disk drive, Checking the AC adapter, Checking operational charging, Checking the battery pack, Power management, Removing and replacing an FRU like 1010 Battery pack, 1020 System board, 1030 LCD unit, 1040 Base cover, audio board, speakers and power board, and more.
How To Hard Reset Lenovo IdeaPad A10

• First, ensure your device is fully shut down.
• Press and hold the correct keys to boot the device into recovery mode.
• try this key combination: Volume Up + Volume Down + Power Volume Up + Home + Power Devices With Camera Buttons: Volume Up + Camera NOTE: If your device isn't on this list and none of the above methods work, do a Google search for the name of your device and "recovery mode" - or look in the device's manual or support pages.
• Release the buttons when the device powered on. You'll see an image of an Android lying on its back with its chest open and its internals revealed.
• Press the Volume Up and Volume Down keys to scroll through the options until you see Recovery mode on the screen.
• Press the Power button to restart into recovery mode. You'll soon see an Android with a red triangle
• Press the Power button to restart into recovery mode. You'll soon see an Android with a red triangle.
• Hold down the Power button and tap Volume Up. You'll see the Android system recovery menu appear at the top of your screen
• Select wipe data / factory reset with the volume keys and tap the Power button to activate it.Select Yes - erase all user data with the volume buttons and tap Power. NOTE:Your device will be reset to its factory state and all your data will be erased.If your device freezes at any point, hold down the Power button until it restarts. goodluck

Read more: How to hard reset ampe a10 tablet? - I forgot my login password. Now my tablet is locked because of wrong entry passwords.Now i wanna to hard reset my tab.i need to hard reset my Ampe A10 Tablet
Table of content Lenovo IdeaPad A10 Manual/User Guide :

• About this manual
• Safety information
• Important service information
• General checkout
• Related service information
• Lenovo IdeaPad A10
• Notices

follow the link for manual
http://download.lenovo.com/consumer/mobiles_pub/ideapad_a10_hmm.pdf

• 1. Turn off the Lenovo IdeaPad Yoga 11S.

• 2. While the IdeaPad is turned off press the small button that is on the left hand side of the power button, it looks like a looping arrow symbol. You will need a small pen or a small needle to press the button.

• 3. Once you press the small button the Lenovo IdeaPad will boot up and automatically take you straight to the Bios menu.

• 4. Select the options that you need to change- such as changing the Function key settings. Exit the menu and save the settings. Once you reboot the computer it will take you back to Windows.

If you want to format your entire hard drive (and reinstall windows) You'll need to insert the appropriate windows disk. If you want to reinstall 7, insert your windows 7 disk and boot off of the disk (When booting, it should start by showing a screen that says "Press any key to boot from CD..." and you can just press a key on your keyboard. From there, follow the on screen instuctions. When you get to the drive partitioning step, select your hard drive and partition you want to format. You can delete the partition you have and make a new one if you want to totally clean the computer (WARNING: This will literally delete everything on your computer. Everything). From there you continue and finish the setup (it may run for a while). And you have a fesh new hard drive and operating system install.

Hi licah,
It seems that your computer is not booting into windows properly at all.
You mentioned you see Lenovo and windows appear then the screen goes Blank afterwards, you can try to Boot directly into the Hard Drive manually just to get everything working or I mean Booting up again but this is a small shot from what you are experiencing but is also worth the try.
turn your S10 machine OFF then turn it back ON and keep on tapping f12 on the keyboard you should see Boot menu on the list Select HDD then press enter this should boot into the Hard Drive, if it does not then you may need to send the system back to Lenovo for a possible reinstallation of windows or on most time we also have the Hard Drive replaced in many cases.
I hope that this Helps.
Have a nice day,
mvincentc

Welcome to Fixya

Looks like the board hang up on you. Take out the battery and unplug the power adapter from the computer. Press and hold the power button for 10 secs then put everything back in. Turn on the computer. Computer should boot up now.

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since you already use one key recovery, means its no longer a software issue, either ram or video card is the problem, might need to send to service center of lenovo.