I own New 64 Bit Vista Home Premium?

dv4-25nr and its a nice laptop by HP. It came with lots of preloaded junk. I am not able to fully remove its leftover registries. I have tried PcDecrapifier but still left entries. Gave me many errors as a matter a fact. Having this 64bit processor, now im not able to get many of the programs out because its not compatible. What programs should i get to fully tuneup and tweak, Fully optimize my laptop. I need it to be a lot faster and efficient. Takes long to load and i remember well that geek squad agents wanted me to pay another 120.00 in there pocket for 9,000 full tuneups and tweaks. Is there a program that will help me fix these flaws i am having with this laptop. To much of junk.