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What's DOS?
Posts: 1
Registered: ‎02-07-2012
Location: Wien
0 Kudos

t420s - swapping to extended monitor doesnt work

[ Edited ]

connecting my laptop to a tv or any other external monitor does work but when i try to swap to extended monitor or any other setting my pc shuts down and reboots.

any ideas ??

thank you in advance

Posts: 1,241
Topics: 3
Kudos: 95
Solutions: 91
Registered: ‎11-02-2011
Location: India
0 Kudos

Re: t420s - swapping to extended monitor doesnt work

Hi

 

For resolving the mentioned issue , Please try the following

 

1.  Update the Bios to latest version

http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS014992

 

2. Update the Display Video drivers

http://support.lenovo.com/en_US/research/hints-or-tips/detail.page?&DocID=HT063249

 

After updating drivers press Fn + F7 to toggle from internal to External Monitor

 

I hope this helps