Help Black Screen after restart

[Al1]

Pahelp naman po panu i troubleshoot yung pc na black screen lang upon restart. tried format at reinstall os pero di sya natuloy. anu po kaya possible cause? salamat in advance mga sir/maam

 

[sunstrife]

working ba ang ctrl + alt + delete?

 

[litroempi]

baka yung monitor muna yung my sira lods