I am using Acer Aspire 3820, and I want to know about the Overclocking an Unclockable Acer Aspire 3820. According to this thread, a pin mod is only needed if a PLL shows a "1" Byte 09h, bit 6. As can be seen in the following discussion, there was some confusion about the location of Byte 09h, bit 6. After some discussion, the consensus is that the location, as shown in NVader Darth thread is correct. The 09h, bit 6 is shown here. From its original form I had modified this section and it might happen that you will get some problem while understanding my problem.