ipa windows 7 mo nalang yan. ganyan din nangyari sa pinsan ko na naka windows 10 grabe andaming problema. kaya pinainstall nya na lang ng windows 7 ayon ayos na.
gawa ka bootable usb tapos try mo e repair kung wala kang cd installer .. madali lng naman gumawa ng bootable usb need mo lang mg download at gumamit ng ibang pc ..
re install os nalang. may way naman mag install ng OS with out deleting all filed on your drive.
Or back up mo nalang muna into other drive mg files mo bago mo reformat.
Baket halos nakikita ko dito pag reformat, delete agad yung yung mga files,
you can reformat your pc or laptop without losing important data. That's the purpose of local disk D:
or dual partition.