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In the upper right you will see a square labeled J1. Inside the square is the TU thingie... that's what you want. I did this on the same model and it worked :thumbup1:

No, the power should be completely off, unplugged, and the battery pulled.

Follow the instructions posted by MrChris. It seems to be working well. That's what I did but there were a few minor...

Place one end of the clip inside the yellow square (PAD503) and touch the other end on the metal post. Hold it there for 30 seconds or so then tada! Bios is cleared :cool:

Thanks Chris!!

This worked on my a135-s4527. It was a little tricky getting that vinyl cover off but it worked like a charm. BIOS pwd is cleared :thumbup1:

Thanks!