Sonya_3

Disk cleanup, depending on the operating system. Windows 7 and 8 system restore tends to take up a lot of space, if your pc is running smoothly, you should create a restore point now and then run disk cleanup and delete all but the most recent restore point.

Have you tried reseating the video card? If it's not snug you will not get a signal. Have to press pretty hard, double check to make sure that it's locked into place (check the pci express slot - feel that lock if it's down you need to remove the card …