I adjusted my headlamp up but now i cant get it to go down. I own a 2010 nissan lafesta

We don't know that model here in North America as it is purely for the Japanese home Market.. You should be able to get the Owners Manual in Japanese and translate it. Or try some of the ideas here.

https://www.google.com/search?q=2007+Nissan+Lafesta.+Adjust+trip+meter

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Question edited for clarity and correction to model name. Lifesta to Lafesta.

The Serpentine Belt Diagram is here. They now call it a 'serpentine belt' because the belt no longer drives the fan. The fan is electric.

https://www.google.com/search?q=2012+nissan+lafesta+serpentine+belt+diagram

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Have the camshaft position sensor checked.

check the fuse box the main fuse or the starting engine fuse might have blow out

Hope this helps
If you are talking about the clock on the DVD display then.....

Audio display model
1. Turn the audio unit on by pushing the "PWR"
button.
2. Push the "MENU" button until the display
indicates the clock adjustment mode.
If the "CLOCK OFF" is indicated on the display,
push the "TUNE" button to change the mode
to "CLOCK ON". Then push the "MENU" button
The time indicator will flash.
3. Push the "SEEK TRACK" button to adjust
the hour.
Push the "TUNE" button to adjust the
minute.
Pushing the , buttons will advance
and , buttons will turn back
the time.
4. Push the "MENU" button to finish the
adjustment.

try to fix your ecm ground,

check your fuses check for power at the switch then you'll need to check the motor

I am sorry we do not have this model in the USA and we only have access to the owners manuals for US models. Try the Nissan owner sitre in your part of the world.

We only have this for USA models.

The auto headlamps can be adjusted in the menu. with vehicle running press the down arrow on the right side control button at the top right steering whell control
menu options will now show on the screen between speedo and tach, scroll to vehicle setup then to headlamp assist then creen comes up high beam assist on, drive on left and drive on right, select drive on left.