Hi, >(I'm using a PIC 16F876-04 with a 4MHz XTAL and two 15pF >capacitor) >What can it be? How do I fix it? HELP! It seems like the oscilattor is taking an eternity to start up. Check the caps and connections and try bigger capacitors, like 33 pf. If you have a scope check it, it will probably start when you touch the probe on the oscilattor pins :-) best regards, Alexandre Guimaraes -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu