Hello my laptop is giving me numerous invalid errors upon boot. I have researched the problem, Also have the DMI utility to tattoo the information back to motherboard. Only hangup is I cannot find the PCID. I checked the back of laptop, under the battery and on the MOBO. I found a sticker on MOBO that says "Build Number" but am unsure if this is the same as the product identification number. There is no sticker with "PCID" on it, I have searched and completely disassembled the laptop numerous times. Am grateful for any help, thanks in advance!