Upgraded to Windows 10 on Lenovo Ideapad p400 touch, screen went dim

Hello,I just installed the free Windows 10 upgrade on my Lenovo Ideapad p400 touch last night. I woke up this morning and booted up my computer, and everything was fine until I attempted to change the brightness. When I tried to do this, my screen went very dim, and now I can't adjust the brightness (and I can't read my screen well, either). Normally, I would install/reinstall the video driver in order to fix this problem (recommended for other users with similar issues), but I currently do not see a Windows 10 version of the driver I need on the Lenovo website.I was wondering:a) if/when a new driver would be available to install (if that's the recommended solution)b) is there something else going on?c) Windows 10 allows you to revert back to Windows 8.1 within the first month of use. Should I just do this?d) Is the p400 touch capable of running Windows 10? Why or why not?Thank you!

Hello. I also have a Lenovo Ideapad p400 touch. Screen also went dim on me. In Windows 8.1 just uninstalling graphic's driver worked. It was Control Panel, Device Manager and then Display Adapters. That doesn't work with Windows 10. The other solution of rebooting and press the increase brightness key at the Lenovo logo somewhat works but it doesn't turn the brightness all the way up. So I found this worked for me: Go here: http://support.lenovo.com/us/en/products/laptops-and-netbooks/ideapad-p-series-laptops/ideapad-p400-touch-notebook/downloads/DS031547 And just download and reinstall the old graphics driver for Windows 8. That finally got me back to maximum brightness.

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LINK
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Disclaimer: While I do work for Lenovo Partner, all my contributions are my personal, non-official and not that of Lenovo or my employer.

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Hi Sendhil,
Welcome to Lenovo Community Forums!
I'm sorry to hear about your situation. I have private messaged you the details. Please let me know after checking your PM inbox.
Do post us back for further queries.
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hi Scoutmaster316,
Welcome to Lenovo Community Forums!
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Hi Khaled,
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Hope to hear back soon
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ValentinT, welcome to the forum.
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Please click "KUDOS" if I have helped you and click "Accept as Solution" if your problem is solved.
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Ipod touch screen went black and then started flashing. Then the turn off slide comes up.

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I didn't know that it was posted three times. My computer didn't say that it posted anything.
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Try:
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How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
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Apple Retail Store - Genius Bar

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hi de1337ed,
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Welcome to the Lenovo Community !
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Upgraded to Windows 10 on Lenovo Ideapad p400 touch, screen went dim

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