Satellite L850 - display problems external 1080 p

I did turn my laptop Satellite L850 via HDMI to an external monitor without problem for many months.

A couple of weeks, I tried to update the catalyst driver and have had problems since.
Basically now when I select mode 1080 p via the Catalyst Control Panel, it makes the screen flash and present vertical lines.

Occasionally, it will work for a short time, even up to a full day and it will randomly start once again. I can play a game in 1080 p mode and it will be totally random, sometimes which allows me to play for hours without having the screen flashes black while the other times, it starts flashing constantly and the only way to fix it is to reboot or pull the HDMI cable and plug back and cross your fingers you have enough time to reopen the catalyst and change in 720 p which is always stable.

I tried:

1 using the AMD catalyst removal tool and resettlement through the catalyst of origin Toshiba drivers factory default
2. use to restore the system to go back before I made the changes
3 using the removal tool from AMD Catalyst and update to the latest version via the site Web of AMD.
4 reinstall my chipset with #1 drivers
5 tried another monitor (still happens)

On a side note, whenever I use the removal tool it removes my USB drivers too and I have to reinstall.

The current graphics driver is AMD Radeon HD 7670 M and I also tried the solution on here http://www.mytoshiba.com.au/support/item/781 tech support forum.

I ran out of options other than a full format and reinstall I want to avoid if possible. Any suggestions would be greatly appreciated.

Thanks in advance

Hello

The AMD Catalyst (control software) update would not solve the issue.
You need to update the graphics driver too!
The graphics card driver can be uninstalled in Device Manager!

I found also this Toshiba document to similar topic which appeared after the phone woke from sleep mode.
[After sleep mode, a distorted image or a split screen may be displayed: http://aps2.toshiba-tro.de/kb0/TSB3903IB0000R01.htm]

This problem was caused by the display AMD. V9.12.0.0 driver, which was automatically installed through the Windows Update feature.

Download and install the driver of Toshiba page of European driver that should solve the issue of the line

Tags: Toshiba

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